international space university the rise of the drones the
TRANSCRIPT
INTERNATIONAL SPACE UNIVERSITY
The rise of the drones Dragonfly
The Rise of Drones Analysis of Current and Future Applications of Drones in
Terrestrial Remote Sensing
MSS17
March 2017
March 2017 © International Space University. All Rights Reserved.
© International Space University. All Rights Reserved.
The Rise of Drones
Final Report
International Space University
MSS 2017
© International Space University. All Rights Reserved.
The MSS 2017 Program of the International Space University was held at the ISU Central
Campus in Illkirch-Graffenstaden, France.
The front and back cover artwork is produced by Hatem Hussein.
While all care has been taken in the preparation of this report, the International Space
University (ISU) does not take any responsibility for the accuracy of its content.
Electronic copies of the Final Report and Executive Summary can be downloaded from the
ISU web site at www.isunet.edu. Printed copies of the Executive Summary may be requested,
while supplies last, from:
International Space University Strasbourg Central Campus
Attention: Publications/Library Parc d’Innovation
1 rue Jean-Dominique Cassini 67400 Illkirch-Graffenstaden
France
Tel. +33 (0)3 88 65 54 32 Fax. +33 (0)3 88 65 54 47
E-mail. [email protected]
DRAGONFLY
I
Acknowledgements
In completing this report on the Rise of Drones, Dragonfly is grateful to ISU for providing the
opportunity and the resources required to make this project possible. Dragonfly would like to express
special gratitude to our advisor, Volker Damann, M.D., for his involvement and valuable advice from
the first meeting until the final submission. Our thanks also go to Professor Chris Welch, Dr Barnaby
Osborne, Dr Hugh Hill, Dr Vasilis Zervos, Professor Jean-Jacques Favier and Ms. Danijela Stupar for
their time, consultation and guidance throughout our research work.
We are also grateful to Peter Thoreau and Yadvender Dhillon, ISU Teaching Assistants. Many thanks
for their time and contribution to the project. Our thanks also go to Muriel Riester, the ISU Librarian
and to Nicolas Moncussi, the ISU IT.
Last but not least, we would like to thank all Dragonfly members for dedicating long hours to
completing this report.
DRAGONFLY
II
Authors
Théo BIDARD Neida CABRERA
Anders CAVALLINI Linda DAO
Melissa FERNANDES Robert GEVARGIZ
Samuel HARRISON Hatem HUSSEIN
Prachi KAWADE Jason KOKOTAILO
Bin LI Shixiong LIU
Chengcheng MA Yabo OUYANG
Fatih OZKAN Marco SCANLAN
Gloria VOLOHONSKY Chentong XIE
Maochun ZHAI Xiaochen ZHANG
DRAGONFLY
III
Abstract
Drones, characterized by rapid technological development in recent years, are gaining market
acceptance and popularity. Drones equipped with imaging and sensing devices are widely used in
photography, disaster management, urban planning and other Earth monitoring applications. Low
complexity, low cost, high maneuverability and rapid deployment can give drones significant edge
over the more complex satellites. Able to fly at low altitudes with improving flight stability, and rising
payload capability, drones are becoming more technically competent and useful.
For the purposes of this report a drone is defined as: A reusable unmanned vehicle flown terrestrially
or in space, controlled remotely or flying autonomously, using on-board flight plans, sensors,
positioning systems or controls. The mission statement of project Dragonfly is to ‘assess the potential
benefits of drones in terrestrial remote sensing’. This report focuses specifically on current and future
remote sensing applications in climate studies, resource management and disaster management from
a technological, business and legal viewpoint.
Technologically speaking, drones can cooperate, complement, or replace satellites in climate studies,
resource management and disaster management respectively. In comparison, drone market trends
are showing an uptake over satellites in all three remote sensing fields, but specifically precision
agriculture within resource management and local meteorology within climate studies. Additionally,
the drone industry is polarizing into a monopoly manufacturer and a rapidly growing drone services
market, the latter being the recommended space for entrant companies. Improvements to batteries,
energy management and materials will improve future capabilities.
There are currently no international regulations for drone operations, thus we recommend unification
of drone laws, standardization of drone categories, and obligation for registration coupled with strict
manufacturing control. Implementing such measures would address safety, security, privacy and
public liability issues. It is also suggested that public, private and non-profit organizations develop
drone programs for rapid deployment after disasters.
DRAGONFLY
IV
Faculty Preface
The MSS17 Class brought together graduate students from many different countries and with very
diverse professional backgrounds. This class has participated in a variety of lectures, workshops,
assignment, professional visits, internships, and individual and team projects. These activities focus
on intercultural, international, and interdisciplinary aspects – the key component of the ISU MSS
curriculum.
During MSS17, two different team projects were carried out: TP “Space and Mining” and TP “The Rise
of Drones”. This report contains the findings of the TP Drones, now named TP Dragonfly, which
focused on analyzing the rapidly evolving drone technology.
Technology developments over the past few years have rapidly advanced drones from military
prototypes to everyday usage. They perform a variety of tasks, ranging from surveillance, remote
sensing, and communication activities, and may therefore become aerial competitors or may offer
augmented services to space-based assets.
The project was carried out by twenty students from ten countries over a six-month period. The team
eagerly started the project and quickly discovered that the definition of a drone was a difficult
undertaking. Next, the team had to narrow the scope of this huge technological field and decided to
focus on terrestrial remote sensing.
But such a project is not only about technology, research, and documentation. It is also about human
aspects in team building, team organization and team project management in an international,
intercultural, and interdisciplinary context. The Dragonfly team initially tried different approaches and
then implemented a robust management structure. It was important that through this team-building
exercise, as cumbersome as it has been at times, a team spirit emerged and provided the individual
buy-in into the project aims and objectives, as well as the timeline and deliverables. This proved to be
helpful especially in the last days prior to delivering the final report, because everyone remained
focused and aligned to the set goals.
Throughout the project, the Dragonfly team demonstrated high-levels of professionalism, discipline,
and maturity. They have made great progress as a team and as individuals because they reinforced
the individual qualities and strengths of team members. They learned from mistakes and continued
to further improve content and quality. “Failure was not an option” for the Dragonfly team.
On behalf of the whole ISU faculty and staff, I would like to thank the team members for their
dedication and hard work and am pleased to commend both them and the Dragonfly report to you.
Associate Professor, Volker Damann, MD
DRAGONFLY
V
Author Preface
Drones are an emerging technology and it is yet to be determined what the scale and scope of their
impact on society will be. We were tasked with identifying whether drones would be an opportunity
or a threat to space-based applications. But what is a drone? And what aspects of drones would we
focus on to tackle that question? Those were the two biggest questions facing our team when we set
out on this project.
Before answering those questions, we needed to establish structure and cultural norms within the
group. Thus, a leadership structure through consensus was created and members were elected to that
structure. A considerable amount of time was spent creating the leadership structure and on team
building and bonding to ensure everyone bought into the concept and was motivated to move forward
as a team. We also created a team identity through our team name Dragonfly. This was inspired by
the fact that some drones have been inspired by flight in other species.
The first phase of the project, a literature review, provided us with ample time to research all aspects
of drones, which we did, through lenses of technology, business, and law. The result of our research
allowed us to answer the two questions that stood out when we started.
Having defined what a drone was for our project, in line with our decision to focus on remote sensing
terrestrial drones, we finally formed our mission statement and went on to create the aims and
objectives for the succeeding phases of the project. Additionally, we restructured and re-elected
members to the leadership team while allowing others to fit into research sub-teams they felt
comfortable with. This phase of the project helped Dragonfly to focus on its stated goal which was to
assess the potential benefits of drones in terrestrial remote sensing.
Our research led to conclusions and recommendations which included such statements as ‘drones can
cooperate, complement and replace remote sensing satellites in climate studies, resource
management, and disaster management respectively’. It was found that the service market was the
most lucrative area for companies to expand into and that legal legislation was a major barrier for the
proliferation of drone technology. Thus, modifying and creating new legislation was recommended to
ensure ethical and safety standards, as well as help the industry grow.
It was with great effort and focus that Dragonfly accomplished all that it did and tackled such a broad
topic with precision. Learning how teams formed and eventually performed was invaluable. We
strongly hope that our conclusions and recommendations will provide direction and inspiration to
new, long established and emerging drone companies as well as governments and non-governmental
organisations. Drones are here to stay, so let us integrate them into our lives in a sustainable, safe,
secure and friendly manner.
Team Dragonfly
DRAGONFLY
VI
Table of Contents
Acknowledgements .................................................................................................................................. I
Authors .................................................................................................................................................... II
Abstract .................................................................................................................................................. III
Faculty Preface ....................................................................................................................................... IV
Author Preface ........................................................................................................................................ V
Table of Contents ................................................................................................................................... VI
List of Figures ....................................................................................................................................... VIII
List of Tables ........................................................................................................................................... X
List of Acronyms ..................................................................................................................................... XI
List of Units .......................................................................................................................................... XIV
1 Introduction .................................................................................................................................. 15
1.1 Project Justification ............................................................................................................................. 16
1.2 Project Aims and Objectives ............................................................................................................... 16
1.3 Background ......................................................................................................................................... 17
2 Technical Capabilities of Drones ................................................................................................... 19
2.1 Introduction ........................................................................................................................................ 19
2.2 Climate Studies.................................................................................................................................... 19
2.3 Disaster Management ......................................................................................................................... 28
2.4 Resource Management ....................................................................................................................... 36
2.5 Conclusion and Recommendations ..................................................................................................... 47
3 Future Trends in Drone Development .......................................................................................... 50
3.1 Introduction ........................................................................................................................................ 50
3.2 Drone Propulsion ................................................................................................................................ 50
3.3 Power Source and Energy Management ............................................................................................. 52
3.4 Level of Autonomy .............................................................................................................................. 54
3.5 Formation Flying (Swarming) .............................................................................................................. 56
3.6 Material and Design ............................................................................................................................ 59
3.7 Sensors and Payload ........................................................................................................................... 61
3.8 Conclusion ........................................................................................................................................... 63
4 Remote Sensing Market ................................................................................................................ 64
4.1 Introduction ........................................................................................................................................ 64
4.2 Market Overview................................................................................................................................. 64
4.3 Drone Development ............................................................................................................................ 69
4.4 Market Segment Analysis .................................................................................................................... 76
4.5 Conclusion ........................................................................................................................................... 85
5 Legal Frameworks for Drone Operations ...................................................................................... 87
5.1 Introduction ........................................................................................................................................ 87
5.2 Legislation and Regulatory Frameworks ............................................................................................. 87
5.3 Ethical Considerations ......................................................................................................................... 99
5.4 Recommendations for New Policy Development ............................................................................. 107
DRAGONFLY
VII
5.5 Impact of Technological Growth on Law and Society ....................................................................... 108
5.6 Summary of Recommendations ........................................................................................................ 109
5.7 Conclusion ......................................................................................................................................... 110
6 Conclusions ................................................................................................................................. 112
References .......................................................................................................................................... 115
Appendix A – Remote Sensing Areas of Interest ................................................................................ 127
Appendix B – Legal Definitions ........................................................................................................... 128
DRAGONFLY
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List of Figures
Figure 2-1: Ramanathan’s drones wait on a runway during a brown cloud experiment near South Korea’s Jeju
Island .................................................................................................................................................................... 20
Figure 2-2: RQ-4 Global Hawk Systems Capabilities ............................................................................................. 21
Figure 2-3: RQ-4 Global Hawk Remote Sensing Platform ..................................................................................... 22
Figure 2-4: Artist’s Impression of CloudSat .......................................................................................................... 23
Figure 2-5: SIERRA Remote Sensing Aircraft ......................................................................................................... 23
Figure 2-6: Comparison of SAR Satellite Image (left) and Drone Visible Image (right)......................................... 24
Figure 2-7: CryoWing Deployment Trailer ............................................................................................................ 25
Figure 2-8: Artistic Representation of CryoSat-2 Deployed on Glaciology Studies .............................................. 26
Figure 2-9: Artistic Impression of the Aura Satellite ............................................................................................. 27
Figure 2-10: Instruments Fitted to the Aura Satellite ........................................................................................... 27
Figure 2-11: The A-Train Constellation for Climate Studies.................................................................................. 27
Figure 2-12: Example of Biomass Calculation and Building Features from LiDAR data ........................................ 29
Figure 2-13: Operating Principle Schematic of LiDAR ........................................................................................... 29
Figure 2-14: Landsat 8 False Color Images of Flood ............................................................................................. 30
Figure 2-15: Flight Path and Flood Damage .......................................................................................................... 31
Figure 2-16: ALTUS II (left) and ALTAIR (right), Developed by NASA .................................................................... 34
Figure 2-17: Aerial images of a vineyard .............................................................................................................. 38
Figure 2-18: Plot of category costs (Euro) for satellite, aircraft and UAV platform, considering a 5 ha and 50 ha
mapping area ........................................................................................................................................................ 38
Figure 2-19: Illustration of the Use of Fixed wing and Quadcopter Drones for forestry applications ................. 40
Figure 2-20: Preparation of a Flight Plan on ‘Mission Planner’, an Open Source Software ................................. 42
Figure 2-21: Workflow Adapted for 3-D Mapping of Open Pit Mines .................................................................. 43
Figure 2-22: System Description for 3-D Mapping of Open Pit Mines .................................................................. 44
Figure 2-23: Hill-shaded DSM (with a cell size of 2 m) in Jianshan area (a) and the Generated DOM (with a Spatial
Resolution of 0.15 m) in the Jianshan Area (b) ..................................................................................................... 45
Figure 2-24: Merging of LANDSAT TM and SPOT Pan Images (Jaakkola method) ................................................ 46
Figure 2-25: Available Geomatics techniques, sensors, and platforms for remote sensing, according to the scene
dimensions and complexity ......................................................................................................................................
Figure 3-1: Typical Ionic Thruster Design .............................................................................................................. 51
Figure 3-2: BionicOpter flapping wing from Festo ................................................................................................ 51
Figure 3-3: Fuel Cell to Power a Drone ................................................................................................................. 53
Figure 3-4: Transmission of Energy through Laser Beams .................................................................................... 54
Figure 3-5: ALFUS Metrics..................................................................................................................................... 55
Figure 3-6: Object Recognition in a Street Environment ...................................................................................... 56
Figure 3-7: Simple Teaming Approach Involving Two Drones .............................................................................. 57
Figure 3-8: Graphical Depiction of a DSN Scenario Using Two Drones................................................................. 58
Figure 3-9: Hierarchical Control Architecture in SPFA .......................................................................................... 59
Figure 3-10: Micro Biodrone, Proposed by NASA Ames and Ecovative Design .................................................... 60
Figure 3-11: Concept Illustration of Drones Growing Process .............................................................................. 60
Figure 3-12: Astronaut Scott Kelly Shows off the SPHERES Satellites on ISS ........................................................ 61
DRAGONFLY
IX
Figure 3-13: MEMS Hysitron, Inc. ......................................................................................................................... 62
Figure 4-1: Global distribution of civilian polar-orbit land-imaging satellites, 1972-2013 ................................... 66
Figure 4-2: (Left) Number of operational civilian polar-orbiting Earth-imaging satellites, 1972-2013; (Right)
Launches per year ................................................................................................................................................. 66
Figure 4-3: Highest panchromatic, SAR and multispectral resolutions achieved per launch year ....................... 67
Figure 4-4: The Worldwide Battery Market, 1990-2015 ...................................................................................... 70
Figure 4-5: Solar, Coal and Oil Employment Rates) .............................................................................................. 71
Figure 4-6: DJI Phantom 3 Drone). ....................................................................................................................... 73
Figure 4-7: Drones Annual Global Financing History. ........................................................................................... 73
Figure 4-8: FAA certification of drones in the United States, 2009-2013 ............................................................. 74
Figure 4-9: Drone Service Providers Map in North America and Europe. ............................................................ 75
Figure 4-10: Annual predicted commercial drone sales ....................................................................................... 77
Figure 4-11: Costs for satellite, aerial, and drone mapping imagery and analysis ............................................... 78
Figure 4-12: Use of Precision Technology in Farming ........................................................................................... 79
Figure 4-13: Commercial weather forecast market .............................................................................................. 81
Figure 4-14: Economic impact of worldwide natural disasters ............................................................................ 83
Figure 5-1. Proposed categories of drone use. ................................................................................................... 107
DRAGONFLY
X
List of Tables
Table 2-1: Comparison of Weather Forecasting Platforms .................................................................................. 20
Table 2-2: Drones Used by NORUT ....................................................................................................................... 24
Table 2-3: YellowScan Surveyor Features and Characteristics ............................................................................. 30
Table 2-4: DJI Phantom 2 Characteristics ............................................................................................................. 32
Table 2-5: Technical comparison between DJI Phantom2 and SPOT satellites .................................................... 32
Table 2-6: DJI Inspire 2 Characteristics ................................................................................................................. 33
Table 2-7: Comparison between DJI Inspire 2 and VIIRS Satellite ........................................................................ 33
Table 2-8: Drones vs Satellites in Fire-Fighting Applications ................................................................................ 35
Table 2-9: Mikrokopter OktoXL Characteristics .................................................................................................... 36
Table 2-10: Performance Comparison for Vineyard Survey ................................................................................. 37
Table 2-11: Main Advantages and Disadvantages of Drones and Satellites for Precision Agriculture ................. 39
Table 2-12: NOMAD Characteristics ..................................................................................................................... 40
Table 2-13: Satellites Used in Forestry Application .............................................................................................. 41
Table 2-14: Characteristics of Drone Used in 3-D Mapping of Open Pit Mines .................................................... 44
Table 2-15: Accuracies Obtained in Imaging the Jianshan Area ........................................................................... 45
Table 2-16: Satellite Platform Performances ........................................................................................................ 46
Table 2-17: Comparative Platform Characteristics for Different Remote Sensing Platforms ............................... 48
Table 3-1: Error sources in drone localization by satellite .................................................................................... 63
Table 4-1: Top Drone producers for 2014/15 ....................................................................................................... 69
Table 5-1: Drone categories in China .................................................................................................................... 89
Table 5-2: Comparison of drone regulations by country ...................................................................................... 93
Table 5-3: Drone failure situations that require immediate NTSB notification .................................................. 101
Table 5-4: Summary of Legislative Recommendations for Drones ..................................................................... 110
Table A-6-1. Range of Applications for Drones ................................................................................................... 127
DRAGONFLY
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List of Acronyms
3D – Three-Dimension
__________
AAAM – Advancement of Automotive
Medicine
AHRS – Altitude and Heading Reference
System
AIS – Abbreviated Injury Scale
ALFUS – Autonomy Level for Unmanned
Systems
AMDAR – Aircraft Meteorological Data Relay
ARC – Aviation Rulemaking Committee
ASIC – Integrated Computer Application Chips
ASRS – Aviation Safety Reporting System
__________
BMEC – Belchatow Mining Energy Complex
BVLOS – Beyond Visual Line of Sight
__________
CAA – Civil Aviation Authority
CAAC – Civil Aviation Administration of China
CADA – Copyright Arts Domain Act
CAGR – Combined Annual Growth Rate
CAR – Canadian Aviation Regulation
CASA – Australian Civil Aviation Safety
Authority
CASIE – Characterization of Arctic Sea Ice
Experiment
CBERS – China-Brazil Earth Resources Satellite
CBFM – Community-Based Forest Monitoring
CEP – Circular Error Probable
CNES – Centre National d’Etudes Spatiales
CPR – Cloud Profiling Radar
__________
DGCA – Director General of Civil Aviation
DJI – Da-Jiang Innovations
DOT – Department of Transportation
DPA – Data Protection Act
__________
ECS – East China Sea
EDPS – European Data Protection Supervisor
EHF – Extremely High Frequency
EM – Electromagnetic
EO – Earth Observation
ESA – European Space Agency
EU – European Union
EUROSUR – European Border Surveillance
System
__________
FAA - Federal Aviation Administration
FDM – Fused-Deposition Modeling
FDPA – Federal Data Protection Act
FiRE – First Response Experiment
FOIA – Freedom of Information Act
FUEGO – Fire Urgency Estimator in
Geosynchronous Orbit
FWMAV – Flapping Wing Micro Air Vehicle
DRAGONFLY
XII
__________
GEO – Geostationary Earth Orbit
GEOS – Global Earth Observation System
GIS – Geographic Information System
GNSS – Global Navigation Satellite System
GPS – Global Positioning System
__________
HALE – High-Altitude Long-Endurance
HAPS – High Altitude Pseudo Satellites
HD – High Definition
HgCdTe – Mercury-Cadmium- Tellurium
HIRDLS – High-Resolution Dynamics Limb
Sounder
HRA – Human Rights Act
__________
ICAO – International Civil Aviation
Organization
ICO – Information Commissioner’s Office
INS – Inertial Navigation System
ISS – International Space Station
ISU – International Space University
IR – Infrared
ISO – International Organization for
Standardization
ISR – Intelligence, Surveillance, and
Reconnaissance
ITU – International Telecommunication Union
__________
JPEG – Joint Photographic Experts Group
__________
LALE – Low Altitude Long Endurance
LEO – Low Earth Orbit
Li – Lithium
Li-Po – Lithium-ion Polymer
LiDAR – Light Detection and Ranging
LIR – Long-wavelength Infrared
MEMS – Miniaturized Electro-Mechanical
System
MEO – Medium Earth Orbit
MIR – Mid-infrared
MLIT – Minister of Land, Infrastructure,
Transport and Tourism
MLS – Microwave Limb Sounder
MTOW – Maximum Takeoff Weight
__________
NASA – National Aeronautics and Space
Administration
NiCd – Nickel-cadmium
NiMH – Nickel-metal hybrid
NAS – National Airspace System
NOAA – National Oceanic and Atmospheric
Administration
NORUT – Northern Research Institute in
Norway
NTSB – National Transportation Safety Board
NTSC – National Television System Committee
__________
OMI – Ozone Monitoring Instrument
OST – Office of the Secretary of Transportation
DRAGONFLY
XIII
__________
PANS – Procedures for Air Navigation Service
PEM – Proton Exchange Membrane
POFA – Protection of Freedoms Act
PPK – Post-Processed Kinematics
PPP – Public-Private Partnership
PRC – People’s Republic of China
__________
REDD+ – Reduced Emission from Deforestation
and Forest Degradation
REIS – RapidEye Earth Imaging System
RF – Radio Frequency
RIMS – Risk Management Society
ROC – Response Operations Center
RPA – Remotely Piloted Aircraft
RS – Remote Sensing
RTK – Real Time Kinematic
R&D – Research and Development
__________
SA – Situation Awareness
SAR – Synthetic Aperture Radar
SARP – Standards and Recommended Practice
SCS – South China Sea
SFOC – Special Flight Operations Certificate
SIC – Satellite Imaging Corporation
SIERRA – Systems Integration Evaluation
Remote Research Aircraft
SIRAL – Interferometric Radar Altimeter
SPFA – Stigmergic Potential Fields Approach
SPHERES – Synchronized Position: Hold,
Engage, Re-orient, Experimental Satellites
SPOT – Satellite Pour l’Observation de la Terre
S&R – Search and Rescue
__________
TES – Tropospheric Emission Spectrometer
TiO2 – Titanium Dioxide
TIFF – Tagged Image File Format
TIR – Thermal Infrared
TLS – Terrestrial Laser Scanning
TOW – Take-off Weight
__________
UNISDR – United Nations Office for Disaster
Risk Reduction
UAS – Unmanned Aircraft System
UIN – Unique Identification Number
UAVs – Unmanned Aerial Vehicles
UK – United Kingdom
USA – United States of America
USD – United States Dollars
USGS – United States Geological Survey
__________
VIIRS – Visible Infrared Imaging Radiometer
Suite
VLOS – Visual Line of Sight
DRAGONFLY
XIV
List of Units
Weight g Gram
kg Kilogram
Distance
km Kilometer
m Meter
cm Centimeter
mm Millimeter
𝜇m Micrometer
nm Nanometer
Angle ° Degree
Time h Hour
min Minute
s Second
Velocity
km/h Kilometers per hour
m/s Meters per second
Currency $ US Dollar
€ Euro
B Billion
M Million
Physics GHz Gigahertz
Hz Hertz
W Watt
V Volt
A Ampere
kV Kilovolt
Area
Ha Hectare
Digital
Mbps Megabits per second
MP Megapixel
MB Megabyte
Fps Frames per Second
1 – Introduction
Project Justification
ISU Page 15 | 128 MSS 2017
1 Introduction
Advancements in drone technology, and the proliferation of drone-based applications, are changing
the way society functions now and how it will function in the future. With wide ranging applications,
drones are creating significant potential in easing human endeavours and paving the way for new
discoveries both on Earth and in space.
The mission statement for this project is to ‘’assess the potential benefits of drones in terrestrial
remote sensing’’.
For the purpose of this project, a drone is defined as a reusable unmanned vehicle flown terrestrially
or in space, controlled remotely or flying autonomously using on-board flight plans, sensors,
positioning systems or controls.
The way drone technologies are helping life on Earth, the current state of those technologies and the
future trends influencing new designs and applications are examined in Chapter 2. In so doing, drones
are compared with satellites to gauge their relative strengths and weaknesses, opportunities, and the
constraints both platforms experience in delivering their respective missions.
Drone technology and knowhow in such enabling areas as payload equipment, power sources and
materials design is advancing at a pace. In Chapter 3 direction and trends for those technical
advancements are researched and discussed. The results are subsequently used in this report to form
a view on how drones could develop in the future and help to deliver economic and capable remote
sensing functionality on Earth and in space.
Demand for goods and services is a key driver of technology advancement and the formation of new
markets. In Chapter 4, the market for drone applications in remote sensing is investigated and the
impact of a range of socio-economic and technical factors is analyzed.
Chapter 5 examines legal constraints affecting drones at national and international levels, leading to
an understanding of how local, national and global agreements enable or hinder technology
development. There is, at present, no universal legislation for drones that is applicable globally. There
are, however, a raft of national legislation frameworks that are steering developments in the drone
industry. Although national drone legislations are considered advanced by many standards, there is
still significant scope left in developing further legislation to address key interests such as security,
safety and privacy.
Dragonfly’s overall assessment and the prospective impact on remote sensing is presented in Chapter
6, where the report draws conclusions and makes its recommendations.
In conducting its analysis, Dragonfly has aimed to assess the impact of drones on existing and future
remote sensing missions and industry. The outcome sought throughout this report has been to create
a body of researched findings in key areas of technology, business and law with the view to raising
readers’ awareness of drone applications and how they might meet societal needs now and in the
future. In so doing the report identifies a number of barriers that could hinder the rise of drones and
their greater take up by society and industry.
1 – Introduction
Project Justification
ISU Page 16 | 128 MSS 2017
1.1 Project Justification
With rapid development in recent years, drones are gaining market acceptance and popularity. Their
use in filming and photography, transportation, communication and the arts is now commonplace.
New uses of drones are currently being explored and developed, rendering this industry commercially
viable. The development of this technology may, in part, lead to drones becoming a potential
replacement for existing Earth and space-based systems in various applications.
The commercial satellite and associated services market turnover reached a peak, at more than $200
billion in 2015, nearly doubling since 2006. All market segments in the space sector experienced
growth except for launch services. In recent years, however, satellite costs fell due to miniaturization
(e.g. CubeSats, NanoSats) and the development of 3D printing technology lowered manufacturing
costs. The future of the satellite market is thought to be heavily affected by the rapid growth of
miniature satellites. New launchers are being developed to satisfy this market demand for cheaper
prices and smaller spacecraft.
Drones are a suitable replacement to satellites in some remote sensing applications largely on
economic grounds. Low complexity and rapid deployment gives this technology a significant edge over
the more complex satellite, while low altitudes and rapidly improving stability and payloads make
drones technically competitive. Furthermore, new design concepts for drones are being developed,
with prototypes ranging from small consumer quadcopters to durable solar-winged drones with a 42
m wingspan. Each type presents advantages and limitations, depending on the intended application.
The potential benefits of drones are beginning to be exploited by the space community, with Lunar,
Martian, and other planetary exploration platforms being developed. These systems allow greater
ease and flexibility in mapping when compared to rovers, being of greater use to manned and
unmanned exploration missions.
There is, therefore, interest in analyzing the ability of drones to be integrated into existing systems for
remote sensing applications, on Earth as well as in space.
1.2 Project Aims and Objectives
The project aims are as follows.
1. To assess the potential applications of drones in terrestrial remote sensing missions
as a complement or a substitute to satellites.
2. To analyze current capability and consider future technological requirements of
drones for deployment to planetary exploration missions.
To meet the above aims, the following objectives are to be achieved.
1. Perform a general literature review analyzing current and future applications of
drones and satellites, the state of these respective markets, and the international
legal climate for the use of drones.
2. Assess the current state of the satellite market in remote sensing applications and the
impact drones could have on that market.
1 – Introduction
Background
ISU Page 17 | 128 MSS 2017
3. Examine the current and future state of satellite and drone technologies, elaborating
on the prospects of drone and hybrid drone-satellite system deployment for
terrestrial remote sensing.
4. Investigate the legal, ethical, social, political and technological concerns and
limitations to the use of drones in terrestrial remote sensing.
5. Analyze the impact of future developments on terrestrial drone usage and assess the
advantages of using drones in manned and unmanned planetary exploration missions.
The following assumptions and considerations are applied in the execution of this project.
1. The impact of intellectual property rights on technology development will not be
assessed.
2. While various national drone regulations are changing to meet current market
demands, all legislation in place by January 2017 will be assumed fixed for the
duration of the project.
3. For space applications, no mission justification factors will be examined. The
technology is applied to future missions; only mission-level benefits of drone use will
be examined.
For the purpose of this report the following definitions will apply.
1. Public Sector: state authorities such as fire fighters, medical services, municipal
authorities and central governments.
2. Private Sector: firms and organizations who provide services at a price
3. Consumer Market: private individuals who buy a drone or pay for drone based
services
4. Recreational Market: drones for personal interest and enjoyment, e.g. taking photos
for personal use.
5. Commercial Market: drones used to provide services, including real estate and wedding photography, professional cinematography, services for mapping and land survey.
1.3 Background
Drones have experienced popular acceptance since the introduction of quadcopters to the market in
the late 2000s. Their subsequent success may be explained partly by falling prices and also the benefits
of a simpler, less complex operation. This has made drones attractive to a wider audience.
Notwithstanding the success drones have experienced in the consumer market, the focus in this report
is on remote sensing, the observation of Earth from a distance. At present, most remote sensing
missions are performed by satellites which produce data on a continuous basis and in large quantities.
Depending on mission requirements, remote sensing by a drone is also becoming a practicable and
viable option.
In the past, especially for civilian applications, flight time and durability were notable operating
constraints. Recent developments, however, in automated control systems, power storage, low-cost
design and manufacturing have led to ameliorating some of those constraints. This has, in turn, led to
a rise in new terrestrial applications for drones where development work, however, is in progress and
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Background
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will be necessary to make drones a mainstream platform for remote sensing solutions on Earth and
beyond.
In deciding on areas of interest Dragonfly considered a range of options. This is featured in Appendix
A. It was decided, given time and personnel resource constraints, the scope of the project would have
to narrow down to a shorter list of topics for investigation and research.
Following considerable deliberations, it was decided that three categories were to be investigated.
These are:
1. Resource Management
2. Disaster Management
3. Climate Studies
The principal rationale for selecting the above categories for research is based, principally, on political
and environmental factors. It is adjudged that those segments are particularly sensitive to political
and environmental factors. As a result, a high level of interest will be generated leading to greater
potential uptake by industry, commerce and the non-governmental sector.
Drones are used in a wide range and variety of activities. Military applications have traditionally been
the leading market for drones. That market, however, is considered sufficiently advanced to be
excluded from this review. In addition, access to military drone information may be restricted,
potentially impacting on the quality of the research outcome.
Areas such as Transport Management, Land Management and Urban Planning are segments with
considerable political, economic and environmental impact. Time and resource constraints, however,
mitigate against investigating those areas too. It is, however, conceivable that developments in
Resource Management, Disaster Management and Climate Studies will also impact areas excluded
here in the medium to the long term.
In considering the scope for research, it is deemed important to relate space-based systems to drone
operations. This means satellites and their interaction, or synergy, with drones is of particular interest
to Dragonfly. In some cases, that interest leads to the report comparing satellites with drones in
providing remote sensing solutions.
Drones continue to be under development and the pace of progress is increasing. New technical
advances in materials science and energy generation techniques provide drones with new and more
challenging operational capabilities. Drones could soon be flying in deep space or be working with
astronauts in Earth orbits to repair or maintenance satellites. The prospects for drone applications are
on the rise. This report provides a vista to those prospects starting with the next chapter where drone
platforms and related technologies inremote sensing are reviewed and discussed.
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Introduction
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2 Technical Capabilities of Drones
2.1 Introduction
In the previous chapter the drone was defined and the mission statement for this project was stated.
Those were two significant landmarks for Dragonfly which were subsequently followed by the project
team reaching agreement on the scope of the project and defining the aims and objectives it sought
to deliver.
In this chapter, we take a more in depth look at drone applications in managing natural disasters and
their use in rescue missions. Drones could also be used in managing a diverse range of resources such
as forestry, mining, agriculture and real estate assets. Here we consider examples of drone
applications in those sectors, their payload characteristics and whether the dominance of satellites in
aerial surveillance may potentially be under threat by the drone.
In climate sciences, drones have also made significant advances. This chapter takes a look at the
application of drones in meteorology and considers their technical merit in use as a payload platform
for the day to day assessment of the weather. Another area where drones have seen progress is in
glaciology, the study of Earth ice sheets, glaciers, seasonal snow and frozen ground. In this chapter,
we review examples from Norway, where the Northern Research Institute in Norway (NORUT) has
conducted extensive tests using drones for a variety of missions including glaciology in the Arctic.
The chapter ends with an overall assessment of how drones could assist strategic and tactical missions
where satellites have long been the sole supplier of data and remote sensing information. A
comparison of outputs from the two platforms leads to conclusions and recommendations.
2.2 Climate Studies
Climate studies covers a diverse range of disciplines, for example, Toxicology, Geology, Meteorology,
and Glaciology. Climate Science has experienced a steady development through the application of
satellite remote sensing technology. Many recent scientific discoveries would not have been possible
by using conventional observations and historic climate models.
In Climate Science, high altitude remote sensing observations, using satellites and drones, are used to
study the Earth’s climate. Drone capabilities are compared with those of satellites identifying and
discussing the inherent advantages the two platforms offer and the challenges they each face.
2.2.1 Weather Forecasting
Weather forecasting is a daily remote sensing function, particularly useful in resource and transport
management. The weather is also of interest to the retail market as consumer behavior, influencing
demand, has been shown to correlate to it. Nearly all sections of the economy are impacted by the
weather (Huang, et al., 2014).
Weather forecasting uses a multitude of airborne platforms that operate at various altitudes. They are
described below.
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Table 2-1: Comparison of Weather Forecasting Platforms
Forecasting Platforms Description
Satellites
Operating in either GEO, at 35,880 km, or in Polar at 850 km, satellites analyze cloud dynamics of almost the entire globe. Three geostationary satellites are required to cover almost one hundred percent of the Earth except the Poles that are observed using Polar orbit satellites.
Aircraft
Aircraft are used to collect meteorological data. The global Aircraft
Meteorological Data Relay (AMDAR) program produces over 300,000 observations per day, including air-temperature, wind speed, wind direction and humidity.
Weather Balloons Weather balloons, flying at 40 km, carry instruments to relay data on temperature, atmospheric pressure, humidity and wind speed.
Ground Stations
A weather station is a facility that provides atmospheric measurements such as barometric pressure, humidity, wind speed and direction, and precipitation. This collection of data is exchanged and merged to enhance local and global weather forecasts.
In 2006, three fixed-wing drones of 25 kg each, were deployed to collect data from a large brown cloud
over the Indian Ocean. The three drones worked in formation enabling investigating three layers of
cloud 0.5 to 3 km above the ocean. Such maneuvers would be considered too risky for manned
aircraft.
Each drone carried a set of instruments. The aim of the project was to examine to what extent drones
could be used for weather forecasting. The mission identified the impact of ‘Black Carbon’, a
microscopic component, as the second largest contributor to global warming beside carbon dioxide
(Everts & Davenport, 2016). Since this successful climate studies experiment, drones have been used
in daily weather forecasts.
Figure 2-1: Ramanathan’s drones wait on a runway during a brown cloud experiment near South Korea’s Jeju Island (Everts & Davenport, 2016)
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In the USA, the National Weather Service uses weather balloons twice a day to monitor temperature
requiring hundreds of launches per day. Balloons examine the atmosphere on a vertical plane only,
whereas drones could provide more accurate data with their greater mobility (Higgins, et al., 2013).
The state of Oklahoma has highly variable weather patterns, but only a few weather balloons are at
the disposal of its forecasters (Vanian, 2016). Oklahoma State University is actively developing drone
solutions for weather forecasts. Their goal is not to replace weather balloons but to augment the
forecasters’ capabilities.
2.2.2 Meteorology
Meteorology is a sub-division of Climate Studies. It is the interdisciplinary study of the Earth’s
atmosphere. It includes such disciplines as precipitation and storms, from dust to ice. Meteorology
focuses more on the small day-to-day analysis of the weather, rather than its long-term effects. For
this report, only drones and satellites deployed for hurricane monitoring and cloud formation studies
are considered. Two specific platforms were selected and reviewed: the Global Hawk, a remote
sensing drone, and the CloudSat Satellite, an Earth observation (EO) satellite.
The satellite was designed and built originally by Northrop Grumman for the United States Air Force
as a defense weapon. The Global Hawk is classified as a High-Altitude Long-Endurance (HALE) drone
capable of flying for thirty-one hours. Its operating altitude is between 13.7 km and 19.8 km depending
on the mission. It has a gross Take Off Weight (TOW) of 12,110 kg and an internal payload capacity of
680 kg, giving it the capability to use Synthetic Aperture Radar (SAR) and InfraRed (IR) imaging
instruments. NASA’s Armstrong Flight Research Center converted two Global Hawk aircraft for
scientific research. Figure 2-2presents the details for Global Hawk (Lund, 2017).
Figure 2-2: RQ-4 Global Hawk Systems Capabilities (Lund, 2017)
NASA’s plan for Global Hawk was to collect hurricane formation data to help improve forecasts. It
completed its first joint mission with the National Oceanic and Atmospheric Administration (NOAA) in
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2010 recording data from hurricanes in the Pacific and Arctic Oceans. Since then Global Hawk has been
used in several hurricane missions. It was the first to give real-time data in the hurricane season of
2016 to upgrade a tropical storm to a Category One allowing for more warning time to businesses and
residents to prepare for the event. Figure 2-3 shows the converted remote sensing Global Hawk
(Dunbar, 2015).
Figure 2-3: RQ-4 Global Hawk Remote Sensing Platform (Dunbar, 2015)
The Global Hawk, like other drones, is constrained by its endurance and range. It has a range of 22,780
km, an altitude of 19.8 km and an endurance of thirty-two hours. It also has to descend for refueling
and maintenance. It has relatively low altitude constraints and a smaller field of view compared to
that of a satellite.
Figure 2-4 represents an image of CloudSat, first launched in 2006 as a component of the A-Train
Constellation (Figure 2-11) of Earth observation satellites for NASA. The CloudSat mission was
intended to profile the composition of clouds and to analyze the content of liquid water and ice. This
would be done using Cloud Profiling Radar (CPR) operating in the W-Band using Extremely High
Frequency (EHF) at 94 GHz. EHF was used because “The amount of power received is strongly
influenced by cloud reflectivity and atmospheric attenuation. Cloud reflectivity increases with
increasing radar frequency but atmospheric attenuation becomes prohibitive at higher frequencies”
(Parkinson, et al., 2006). Cloud detecting performance is optimized using EHF. To provide such active
power, the antenna diameter is as large as the satellite body itself at 1.85 m. CloudSat works at a
resolution of 0.5 km by 1.4 km. It weighs 260 kg and uses 270 W of power (Parkinson, et al., 2006).
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Figure 2-4: Artist’s Impression of CloudSat (Parkinson, et al., 2006)
2.2.3 Glaciology
Glaciology is the study of the Earth’s environmental ice, including ice sheets, glaciers, seasonal snow
and frozen ground. A change in the thickness of these components can be attributed to the changing
of the Earth’s environment (Stevens, 2014). Two platforms are analyzed and discussed here; the
Systems Integration Evaluation Remote Research Aircraft (SIERRA) drone from NASA and the CryoSat-
2 from the European Space Agency (ESA).
The SIERRA is a fixed-wing medium-class drone for remote sensing applications operating at an
altitude of 3.6 km with a range of about 1,000 km for eight to ten hours. It weighs a little over 200 kg
and can carry a payload of 45 kg, giving it a mass-payload ratio of nearly 4 to 1. It has accomplished
missions using passive (imagers), active (SAR) and air sampling remote sensing systems. Figure 2-5
shows the SIERRA on a mission in the Arctic (Fladeland, 2009).
Figure 2-5: SIERRA Remote Sensing Aircraft (Fladeland, 2009)
SIERRA accomplished its first science mission in July 2009 for the Characterization of Arctic Sea Ice
Experiment (CASIE). This was part of a three-year effort to find and measure some of the oldest ice
sheets in the polar region. The SIERRA logged over sixty hours of flight time, over eleven flights, for a
total of nearly 3,000 km. “The data provided surface topography observations, standard electro-
optical imagery, synthetic aperture radar imagery, and surface reflectance and temperature
measurements.” (Fladeland, 2009)
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The NORUT is a national research group, specializing in innovation. NORUT’s research focus is on the
Arctic region. One of NORUT’s research programs is on drones, leading the investigation of Climate
Studies such as aerial mapping, environmental monitoring, and meteorological analysis (Xsens, 2014).
Figure 2-6: Comparison of SAR Satellite Image (left) and Drone Visible Image (right) (Solomon, 2014)
NORUT has used drones in its investigation of the following scientific topics:
- arctic lower atmosphere
- ocean and ice-processing
- greenhouse gas processes
- vegetation mapping
- emergency response
- resources management
Figure 2-6 represents images from one of NORUT’s scientific missions in the Arctic. The resolution
produced by the drone is superior to that from a SAR satellite (Solomon, 2014). NORUT has deployed
four types of drones. They are the CryoWing Micro, CryoWing MK 1 and 2 and CryoCopter as
represented in Table 2-2 (Solomon, 2014).
Table 2-2: Drones Used by NORUT (Solomon, 2014)
CRYOWING
MICRO CRYOWING MK 1 CRYOWING MK 2 CRYOCOPTER
MTOW 2-3 kg 32 kg 60 kg 6-7 kg
WING SPAN 1.2 m 3.8 m 5.2 m -
RANGE 100 km 400/800 km 1600 km 2 km
TELEMETRY UHF 3G/GSM Iridium,
UHF 3G/GSM,
Iridium, UHF UHF and C-Band
PAYLOAD
CAPACITY 0.8 kg 10 kg 15 kg 3 kg
FUEL Li-Po Battery 4.5 kg petrol 15 kg petrol Li-Po Battery
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Drones were chosen by NORUT to bridge a gap in satellite data provision and to demonstrate the
following operational capabilities (Solomon, 2014):
- selectable flight path
- high resolution payload
- rapid revisits
- fly below clouds
- low cost manufacturing and operation
Drones are limited to Electromagnetic (EM)-based sensors, due to the limited size of the payload
(Solomon, 2014). The NORUT fleet consists of small drones, with rotary and micro wing, and the larger
diesel/lithium battery powered aircraft. The CryoWing is one of the larger lithium battery drones. It
can deploy from a car trailer, or launch from a snow scooter as represented in Figure 2-7. Its area of
operation is in the Arctic, but it can also be used anywhere in the world. Selection of a drone depends
on mission characteristics and payload requirements for the mission (Burkow, 2013).
Drones carry small and medium size cameras on board, taking large quantities of images to combine
as mosaics. Low positioning and orientation accuracy because of small navigation payload is
problematic.
Figure 2-7: CryoWing Deployment Trailer (Xsens, 2014)
The main advantage of smaller drones (CryoWing Micro and CryoCopter) is their low cost of collecting
data in inaccessible locations. Small payload capacity, and limited observation range are major
constrains. Smaller drones use low to medium size sensors and provide a lower quality output. Their
small size also limits them to small navigation system yielding less accurate positioning data. CryoWing
Micro and CryoCopter drones are, considered unsuitable for missions requiring highly accurate
positioning information similar to those obtained by SAR (Burkow, 2013).
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Figure 2-8: Artistic Representation of CryoSat-2 Deployed on Glaciology Studies (ESA, 2004)
CryoSat-2 (Figure 2-8) was launched in 2010 for ESA to observe Earth arctic ice movements. .
The mission objectives were:
- to detect the thickness of floating sea ice
- to determine the thickness of ice sheets
CryoSat-2 deploys a modified SAR technique called Interferometric Radar Altimeter (SIRAL) with a
spatial resolution of 250 m. This is superior to conventional radar altimeters providing spatial
resolutions of 5 km. CryoSat-2 uses an active payload sensor operating in a non-sun-synchronous polar
orbit at 717 km altitude. It has a mass of 720 kg and was intended to have a minimum mission duration
of three years (ESA, 2010).
Aura (Latin for Breeze) is a NASA mission dedicated to investigating and understanding the changing
chemistry of the Earth’s atmosphere. Its measurements enable scientists to monitor ozone trends,
assess changes in air quality and investigate their impact on climate change. The analyses also
produced large quantities of data on predictive climate models, enabling more accurate forecasting
and monitoring. Mission life time was set to of six years (Parkinson, et al., 2006).
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Figure 2-9: Artistic Impression of the Aura Satellite (Parkinson, et al., 2006)
The Aura, as illustrated in Figure 2-9, has four instruments on board to study atmospheric chemistry.
They are:
- High-Resolution Dynamics Limb Sounder (HIRDLS)
- Microwave Limb Sounder (MLS)
- Ozone Monitoring Instrument (OMI)
- Tropospheric Emission Spectrometer (TES)
MLS records weak microwave emissions from vibrating molecules. HIRDLS and TES monitor thermal
infrared emissions and OMI observes the adsorption of sunlight that has been backscattered in the
visible and ultraviolet wavelengths.
Figure 2-10: Instruments Fitted to the Aura Satellite (Parkinson, et al., 2006)
The A-Train is a constellation of close-proximity satellites orbiting the Earth a few minutes apart. The
remote sensing mission objectives vary for each satellite but, essentially, they enhance the
understanding of the Earth’s climate using higher quality data.
Figure 2-11: The A-Train Constellation for Climate Studies (Parkinson, et al., 2006)
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2.2.4 Analysis and Discussion
Climate Studies has benefited from satellite technology producing better modelling results due to
better data from space. More recently, drones have started to play their part too, in a complementary
role to satellites. It was found that drones could not replace satellites in remote sensing but they could
bridge a gap in the data provided by satellites. Complementary data provided by drones has led to a
better understanding of climate change.
Satellites offer a reliable alternative solution to the technical and operational challenges faced by
drones. Drones, however, can complement satellites and placate some of their weaknesses. Drones
offer low cost, low level maintenance, flexible and adjustable flight paths, and the ability to make rapid
revisits to monitor a location constantly. Satellites, can cover large spatial areas, have long operational
lives but cannot be repaired or maintained. Satellite technology has a proven space flight heritage,
extending over sixty years. Drone technology is new but it is on the rise and developing rapidly
(Solomon, 2014). Drones are also acting as a proving ground for new complementary technologies.
2.3 Disaster Management
Major disasters such as floods, earthquakes, nuclear accidents and forest fires cause loss of life,
property and infrastructure damage. In those situations, fast and effective disaster management takes
precedence over all other matters.
To fulfill rescue missions, it is necessary to identify the people affected by the disaster and to establish
access routes to evacuate and supply. Satellites and drones could be used in those situations and in
some instances, drones could play a more important role than satellites (Tanzi, et al., 2016), (Restas,
2015).
Satellites offer an expensive option affected by cloud cover and atmosphere attenuation. Due to
orbital and legal restrictions, satellites also pose response time and data sharing constraints.
Drones, on the other hand, provide imagery at a higher resolution than satellites. They are also quicker
and cheaper to develop, manufacture and deploy. Low-cost drones are affordable and therefore it is
possible to envision a future where communities use privately-owned drones to offer immediate
assistance in times of crisis.
2.3.1 Use of LiDAR Technology for Disaster Management
A study analyzing Hurricane Katrina of 2005 showed that Light Detection and Ranging (LiDAR) data
had the potential to increase effectiveness and efficiency in response to the emergency. The study
focused on the detection of obstructions to transportation networks, a real issue when planning to
deliver relief supplies rapidly. It was demonstrated that detecting obstructions using LiDAR technology
and entering the results into the Geographic Information System (GIS) would have made response
times some thirty five percent (35%) faster (Ransberger, 2009).
A LiDAR payload can measure distance from drone to the ground. LiDAR, therefore, can compile high-
quality images showing height and elevation. In the event of an earthquake, or a landslide, accurate
elevation data using LiDAR allowing rescue personnel to locate suitable staging posts to deliver
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missions. Improved ground intelligence, information on soil displacement and the mapping of debris
causing obstruction are typical benefits offered by LiDAR technology.
In the event of forest and bush wildfires, LiDAR can predict advancing fire fronts. In floods, LiDAR can
identify affected areas and direct aid workers to those in need of rescue and assistance. Early
detection of damaged power lines could prevent rescue workers endangering their lives (Harris
Geospatial Solutions, 2014).
Figure 2-12: Example of Biomass Calculation and Building Features from LiDAR data (Hallas, 2016)
YellowScan Surveyor is a drone using LiDAR to perform precise 3D mapping and aerial surveying. The
operating principle comprises emitting a pulse and recording the backscatter signal. In this way, a
drone can get accurate distance to the target and compute the precise echo position.
Figure 2-13: Operating Principle Schematic of LiDAR (Yellowscan, 2017)
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Table 2-3: YellowScan Surveyor Features and Characteristics (AltiGator, 2016)
DESIGN
- Weight:1.5 kg
- Power consumption: 15 W - Autonomy: 1.5 hours typically - Size (mm): 100 x 150 x 140 - High-end Altitude and Heading Reference System
(AHRS) allowing precision measurement of the attitude - Dual-frequency GNSS receiver, capable of operating in
RTK or PPK positioning mode - On-board computer for continuous data acquisition
and processing - Battery (up to 1.5 hours of autonomy)
PAYLOAD
- Payload Weight: 1.5 kg battery included - Precision: 4 cm - Absolute accuracy: 5 cm - Multi-echo laser scanner - Laser scanner frequency: 300 kHz
SURFACE OF COVERAGE - Small areas (<10 km2 or 100km linear)
2.3.2 Flood Disaster Management
2.3.2.1 Satellite Platform – LandSat 8, SPOT-6 and SPOT-7
Landsat 8 was launched in 2013 to continue an earlier LandSat data mission. After the flood events of
Colorado in 2013, Landsat provided valuable images to support flood rescue operations on the ground.
Landsat, for example, provided panchromatic band (8) images with high 15 x 15 (m) resolution (see
Figure 2-14).
Figure 2-14: Landsat 8 False Color Images of Flood (USGS, 2014)
SPOT (Satellite Pour l’Observation de la Terre) satellites are commercial high resolution Earth
observation satellites operated by Spot Image Limited. Optical imaging satellites such as SPOT-6 and
SPOT-7, flown in a twin satellite formation, are used in disaster management. Satellites in orbit, when
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phased 180° apart, can raise coverage acquisition capacity to 6 million km2, an area equivalent to ten
times the area of France (Satellite Imaging Corporation (SIC), 2014). SPOT 7 has a resolution of 1.5 m
and an acquisition capacity of 3 million km2 coverage per day. A 1.5 m resolution capability can be
used to create topographic maps.
2.3.2.2 Drone Platform
Images captured by a drone have higher resolution than those captured by a satellite. This is shown
in Figures 3 and 4 where Landsat 8 is directly contrasted to that of a drone. Figure 2-15 contains three
detailed images from a drone targeting three areas of interest on a map (Dashti, et al., 2014). This
image was taken by the drone three days before a Landsat 8 image was produced.
Figure 2-15: Flight Path and Flood Damage (Dashti, et al., 2014)
In the United States, the State of Utah Division of Emergency Management was reported to have used
drones to create accurate flooding reports. Drones allowed rescue authorities to make strategic
decisions in real time and compile preliminary status reports before response teams arrived on site.
In carrying out rescue missions, drones could save on cost and allow emergency teams to save time
and resources (Vowell, 2015).
The drone in the Utah rescue mission report was a Da-Jiang Innovations (DJI) Phantom 2 (DJI, 2013),
a 4-multirotor vehicle, described more fully in Table 2-4. The camera onboard was a GoPro 3, able to
broadcast real-time live footage of the disaster area.
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Table 2-4: DJI Phantom 2 Characteristics (DJI, 2013)
Size Diagonal distance: 350 mm
Payload capacity ≤300 g
Max flight time 25 min.
Realistic flight time
18 min w/ 168 g Zenmuse H33D. 163 g GoPro 3 assumed similar duration
Altitude 500 m from the ground. 120 m w/o GPS
2.3.2.3 Comparison
Table 2-5 below represents a comparison of features and capabilities between drones and satellites
for application in disaster management,
Table 2-5: Technical comparison between DJI Phantom2 and SPOT satellites (DJI, 2013), (SIC, 2016)
Criterion Drone – DJI Phantom 2 Satellite – SPOT 6/7
Resolution 12MP Wide: 4000 x 3000 pixels Panchromatic: 1.5 m Color merge: 1.5 m Multi-spectral: 6 m
Output data
jpg, mp4 (45 Mb/s) 4K (16:9) 15, 12.5 fps 4K (17:9) 12 fps 2.7K (16:9) 30, 25 fps 1080p (16:9) 60, 50, 48, 30, 25, 24 fps
Blue (0.455 - 0.525 µm) Green (0.530 - 0.590 µm) Red (0.625 - 0.695 µm) Near-Infrared (0.760 - 0.890 µm) Imaging swath:60 km at Nadir
Flight altitude 500m from the ground. 120 m w/o GPS
694 km polar orbit
Total frames 1 frame/ 1 video 1
2.3.3 Wildfire Monitoring
In an article (Antunes, 2017), Halifax Regional Fire and Emergency is reported to have added two
thermal imaging drones to its inventory of assets. Its firefighters have undergone intense hands-on
training to operate these drones (News, CBC, 2016). The aim was to use drones to produce thermal
images to predict the spread and direction of advancing fires.
The drone reported in the article was a DJI- Inspire 2 (DJI, 2016), a 4-multirotor aircraft, described
more fully in Table 2-6.
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Table 2-6: DJI Inspire 2 Characteristics (DJI, 2016)
Size Diagonal distance with propellers excluded: 605 mm (23.8 inch, Landing Mode)
Payload capacity 710 g
Max flight time Unspecified
Realistic flight time 27 min. with 253 g X4S camera as payload. It will be less with 270 g XT cameras
Altitude 2.5 km with standard propellers 5 km with specially-designed propeller
The camera was a Zenmuse-XT, weighing only 20 g and able to acquire thermal images using the
spectral band 7.5 - 13.5 μm.
Small fires can be detected using a Visible Infrared Imaging Radiometer Suite (VIIRS) which has multi-
band imaging capabilities. It is also used to take visible and infrared images of hurricanes, smoke, and
atmospheric aerosol.
Table 2-7 presents a comparison of a satellite and a drone based on thermal imaging performance.
Table 2-7: Comparison between DJI Inspire 2 and VIIRS Satellite (DJI, 2016), (NASA, 2012)
Criterion Drone – DJI Inspire 2 VIIRS satellite
Resolution 640 512 pixels ~750 m at nadir
Spectral coverage from 412 nm to 12 μm in 22 bands
Output data
JPEG (8-bit) or TIFF (14-bit) NTSC 30 fps, NTSC 60 fps, PAL 25
fps or PAL 50 fps video recording 2MB/s
Data rate: 5.9 Mbps Quantization: 12 bits
Image size 20.8 Mb
pixel pitch 17 μm 3000km along track for bands
Flight altitude
Operational 30-50 m (estimated based on average tree heights (Rostami, 2011))
capability 2500 m
Sun-synchronous Polar Orbit
824 km
Accuracy ±20°C (±36°F) -
Total frames 1 frame/ 1 video 1
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Although the VIIRS equipped satellite may show superior performance in some areas, the DJI Inspire
2 drone offers capabilities that tip the scale in favor of the lower cost and more flexible drone. The
satellite provides a 3000 km wide swath width, unmatched by the drone. That, however, means high
processing time and cost to convert large quantities of data into usable images.
Detecting wildfires by satellite and conducting subsequent close up investigations using drones would
make more efficient use of expensive space-based resources. Highly mobile drones capable of rapid
deployment would contribute to response strategy formation and tactical planning.
Altus II and Altair drones are both NASA designed aircraft. They were developed to demonstrate the
application of drones in disasters such as wildfires. ALTUS II originates from the ‘First Response
Experiment (FiRE) Demonstration Mission’ and the ALTAIR is from the ‘FiRE II Demonstration Mission’.
Both are aimed at acquiring real-time images of wildfires that could be used to assess and mitigate
fire hazards and events (Ambrosia, 2003).
Altus II and Altair operate at a higher altitude than a traditional quad-copter which has been flown to
a maximum altitude of 11,000 ft. (3.35 km) (Bennett, 2016). For example, Altus II flies at 65,000 ft.
(19.81 km) for a duration of eight hours. The Altair flies at 55,000 ft. (16.76 km) for thirty-two hours
allowing a larger coverage and faster response. This, however, results in higher maintenance over the
operating life and higher capital investment at the outset.
Figure 2-16: ALTUS II (left) and ALTAIR (right), Developed by NASA (Ambrosia, 2003)
Table 2-8 presents the pros and cons of satellite and drone platforms in managing and fighting fire
disasters.
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Table 2-8: Drones vs Satellites in Fire-Fighting Applications
Drones Satellites
+
- Rapid deployment - Cheap replacement and
maintenance - Overall low cost. - Endures bad weather such as
rain and/or wind. - Provides live footage from
disaster area
- Constant/frequent observation of a large area on the surface of the Earth: FUEGO theoretically covers most of western USA - On-board image processing
permits rapid fire detection
-
- Confined to a specific area because of
battery life and related limited mobility
- Constant drone patrols might have to be deployed to detect fires
- Overall higher costs because of Geostationary orbit. Cost decreases with altitude (MEO, LEO) but remains higher than that of drones
- Cost of replacement in case of accident or subsystem failure is prohibitive
- Fire detection from space is difficult or impossible under cloud cover or in the presence of strong winds
2.3.4 Combination of Two Platforms
Fire Urgency Estimator in Geosynchronous Orbit (FUEGO) is a proposed framework for early detection
of wildfires using a satellite with infrared sensors orbiting in Geostationary Earth Orbit (GEO). The goal
is to combine FUEGO with a system of drones equipped with infrared cameras to enhance wildfire
detection and response (Carey, 2015).
FUEGO proposes a GEO orbiting satellite with a telescope and an onboard image processing capability.
The satellite scans the same patch of Earth continuously to detect wildfires as small as 12 km2. The
proposed target area will be in Western USA. Onboard image processing will be the key difference
between FUEGO and other remote sensing satellites allowing rapid detection and response to fires.
FUEGO will use multi-spectral sensing using Mercury-Cadmium-Tellurium (HgCdTe) infrared sensors.
On board equipment, will be capable of producing images from seconds to minutes. The proposed
system is intended to improve resolution and reject false alarms. Precise pointing and reliable imaging
capability will further improve mission quality (Lampton, et al., 2013).
2.3.5 Impact of Drones on Disaster Management
According to Robin Murphy, director of the Center for Robot-Assisted Search and Rescue at Texas
A&M University, robots are about to revolutionize our way to deal with disaster management. In case
of a disaster scenario, reducing the initial response by one day, the overall recovery time could be
shortened by hundreds to thousands of days (Murphy, 2015). Drones are overcoming obstacle
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avoidance and navigation issues, the main limitation of other robots, making them a reliable and easy-
to-use solution.
Ever-improving technology provides many advantages most significant of which are a reduction
in overall mission cost. A comparison of satellite performance with drones suggests there are
shortcomings in both methods with characteristic limitations affecting mission capability. The
effectiveness of drones, however, is a major asset that gives them an edge in most disaster
applications. This statement, however, is nuanced by some examples showing that missions
combining both systems would provide viable alternatives.
2.4 Resource Management
2.4.1 Precision Agriculture
Precision Agriculture aims to ensure the heterogeneity of crops through specific time and scale
management. Advances in technology have allowed Precision Agriculture to become a reality. Benefits
are environmental (by decreasing input losses and improving yield) and economic, through decreasing
cost and risk (Davis, et al., 1998) (Whelan & McBratney, 2000).
Farmers and farm owners develop their land knowledge over many years of observation, planting,
growing and harvesting. Drones and satellites offer the capability to shorten that timeline and simplify
the monitoring and analysis process through automation.
2.4.2 Precision Agriculture Applied on a Vineyard
Two Italian vineyards were surveyed using a drone, an aircraft and a satellite. This was to assess the
capability of each platform (Matese, et al., 2015). The mission was to survey vegetation pattern, by
counting the number of rows to estimate the total number of vines.
The drone used in the survey was a Mikrokopter OktoXL, an eight-multirotor aircraft described more
fully in Table 2-9 below.
Table 2-9: Mikrokopter OktoXL Characteristics (MikroCopter, 2014)
Size 73 x 73 x 36 cm
Payload capacity 2.5 kg
Max flight time 45 min
Realistic flight time 18 to 25 min (with payload)
Altitude Line of sight (several hundreds of meters)
The camera was a Tetracam ADC Lite (Tetracam Inc., Chatsworth, CA, USA), able to acquire spectral
wavebands from 520-600 nm, 630-690 nm and 760-900 nm. It weighed 0.2 kg.
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The drone flew over the vineyard autonomously at a speed of 4m/s at an altitude of 150 m above
ground level. It took some 100 frames with a minimum land overlap of 40% required to produce, a
correct orthophoto of the observed area. An orthophoto (or ortho-map) is the addition of all the
images with a correction of the distortion produced by the camera lens and in a correct alignment.
Comparison data came from RapidEye, a German constellation of five satellites launched on August
29th, 2008, to operate in a 630 km sun-synchronous orbit. The global revisit time was six days. The
payload, the RapidEye Earth Imaging System (REIS) camera, was able to acquire data with a spatial
resolution of 6.5_m in the visible and near infrared spectra.
Table 2-10 compares the deployed satellite and drone against criteria relating to payload
performance.
Table 2-10: Performance Comparison for Vineyard Survey (Matese, et al., 2015)
Payload criterion Drone RapidEye satellite
Resolution 2048 x 1536 pixels 12,000 pixel linear
Output data 10 bit RAW 16 bit NITF
Image size 6 Mb 462 MB/25 km along track
for 5 bands.
Flight altitude 150 m 630 km
Ground resolution 0.05 m/pixel 6.5 m/pixel
Ground image dimension 116.5 x 87.5 m 77 x 45 km
Total frames 100 1
The satellite’s (RapidEye) 6.5 m/pixel resolution was not adequate to delineate vine rows in the
vineyard. The superior resolution offered by the drone was found to be more satisfactory for this
application. Figure 2-17 (c and d) is a representation of the image obtained by the drone. It is put
alongside images obtained from the satellite and the aircraft (a and b).
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Figure 2-17: Aerial images of a vineyard.(a) Vineyard portion of Satellite image; (b) Vineyard portion of Aircraft image; (c) Vineyard portion of UAV image; and (d) Vineyard portion of drone image with inter-row filtering (Matese, et al., 2015).
Figure 2-18 represents the results of a cost analysis on three platforms comprising a satellite, a plane
and a drone.
Figure 2-18: Plot of category costs (Euro) for satellite, aircraft and UAV platform, considering a 5 ha and 50 ha mapping area (Matese, et al., 2015)
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Assuming a linear rule between surface and cost, drones appear to offer the most cost effective
solution for small land areas of up to 7 ha mainly due to their low cost of acquisition. Large number of
pictures, however, add significant input costs to the surveying process. That cost increases
exponentially as coverage area expands. Above 7 ha, satellites prove to be more economic. Limited
coverage is not always the main drawback of using drones. Image processing and data management,
are the main cost drivers. Developments in processing software technology and greater on-board
computer capacity could lead to reduced overall operating costs for drones.
Table 2-11: Main Advantages and Disadvantages of Drones and Satellites for Precision Agriculture
Drones Satellites
+ - Does not suffer from cloud cover
- Deployment flexibility
- Revisit time is enough for the application
- Large coverage surface
- - high number of pictures required to cover a larger area
- Resolution too poor for certain tasks
2.4.3 Forestry
Drones in forestry are used for a variety of purposes. They could fight forest fires or produce
intelligence to better manage forests and landscapes. Drones may also be used to support such
activities as:
- sustainable forest management (ortho mapping, growth model, digital elevation models)
- landscape management (3D-landscape, canopy surface models, tree detection)
- detection of illegal activities
2.4.3.1 Community-Based Forest Monitoring and Drones
The use of drones for the benefit of Community-Based Forest Monitoring (CBFM) is the engagement
of communities for the collection of forestry data for scientific purposes (Paneque-Gálvez, et al.,
2014). CBFM was used to support a program called Reduced Emission from Deforestation and Forest
Degradation (REDD+) program where data collected by communities was shown to be accurate, low
cost and repeatable.
Usually, CBFM involves ground surveys comprising such tasks as measuring tree diameter, height,
canopy cover and specimens. They are time-consuming, costly and cover small areas. The use of low-
cost drones could greatly improve forest monitoring.
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Figure 2-19: Illustration of the Use of Fixed wing and Quadcopter Drones for forestry applications (OpenForests, 2017)
In their study, drone types were classified by size, payload, flight range, height, and duration to identify
most suited for CBFM. Helicopters and quadcopters are not suited because of their short range.
Battery size is limited and a typical flight duration is about thirty minutes but for their good
maneuverability, they can be used in 3D mapping (Watson, 2015).
Fixed-wing drones are better suited to CBFM applications. They enjoy better endurance, due to glide
capability, and system simplicity. Fixed-wing drones are able to cover up to 20 km, the distance
required frequently for CBMF in tropical forests.
2.4.3.2 Drone and Satellites Designed for Forestry Applications
Nomad, from the company Novadrone, is a fixed-wing aircraft especially designed for forestry
applications (Novadrone, 2016). Its characteristics are detailed in Table 2-12 below.
Table 2-12: NOMAD Characteristics (Novadrone, 2016)
Composition Kevlar and carbon fibbers
Wingspan 300 cm
Payload capacity 2 kg
Max flight time 2 h (optimal conditions)
Speed 18 m/s (65 km/h)
Range 130 km
Altitude max 12 km
Typically, the drone flies circa 50 to 60 min at an altitude of 250 m. Such a performance would allow
imaging of up to 500 ha at high resolution achieving less than 10 cm per pixel.
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Table 2-13 presents details of two satellites for EO, namely IKONOS and QuickBird. The satellites are
characterized by a high-resolution payload on visible and near infrared wavelengths. These satellites
could be used for applications in resource management.
Table 2-13: Satellites Used in Forestry Application (ESI, 2011)
Satellite
IKONOS
QuickBird
Mission Earth observation Earth observation
Orbit 680 km 482 km
Inclination 98.2° 98°
Period 98.4 minutes 93.4 minutes
Revisit time about 3 days about 3.5 days
Resolution 0.82 - 1 m (PAN)
3.2 - 4 m (MS) 0.61 m (PAN)
2.4 m (MS)
Swath width
12.2 km 18 km
Technical features of two satellite platforms were assessed and compared with those of drones. The
results of the assessments are discussed below.
2.4.3.3 Advantages
- High spatial resolution: drones produce superior resolution due to their low altitude
operation. Satellites, however, are now able to perform to 0.5 m resolutions, considered adequate for
most remote sensing applications.
- High temporal resolution: drones can conduct daily observations more frequently than a
satellite. Satellite revisit times, however, are about 3 to 5 days, considered adequate for resource
management missions.
- Fast learning curve of drone users: skills to carry out a drone mission can be developed
through a short training program. Simplicity of drones makes them attractive to the CBMF community.
A wide distribution of drone systems could enhance survey quality.
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- Low price: drones are the cheaper option in forest monitoring. There are methods for
developing inexpensive solutions (< $2,000) to survey and map forests (Koh & Wich, 2012). Parts are
cheap and maintenance does not require a specialist. Widely available open-source software such as
‘Mission Planner’, can be used to operate and control drones on autonomous missions.
Figure 2-20: Preparation of a Flight Plan on ‘Mission Planner’, an Open Source Software (Smashtronics, 2014)
In practice, low-cost drone solutions have helped to save forests in Borneo. In one case, local
population developed and used small gliders to monitor environmental damage caused by large
companies (Bartlett, 2016). The exploitation of natural resources (minerals, palm oil and wood) has
led to the loss of thirty percent of Borneo’s rainforest. Hundreds of homemade drones, identified
companies operating illegally and drone images were used successfully in court against a non-
compliant firm.
2.4.3.4 Limitations
- Low spectral resolution: payload limitation, of a few kilograms, restricts drones to traditional
cameras only. Satellites however benefit from multi-channel payloads, such as infrared or near-
infrared, which generate significant quantities of scientific data. Achieving better spectral resolution
performance on drone applications would be costly. High cost would make them uneconomic for
CBFM.
- Poor geometric and radiometric performance: drones are susceptible to distortion through
pitch, roll and yaw compared to space borne platforms. Geometric distortions are difficult to remedy,
even by experts, resulting in inaccurate geo-referencing of acquired images. In addition, lack of precise
ground control points is a problem for registration of image and subsequent rectification. This affects
the quality of scientific data produced.
- Sensitivity to atmospheric conditions: contrary to satellites, drones are not affected by cloud
cover but they remain susceptible to fog, heavy rain and wind. In order to produce accurate imagery,
wind speeds should be as low as 15 to 25 km/h depending on the drone type.
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- Risk of collision: small drones are not equipped with anti-collision systems and, as a result
objects entering their flight path could cause in collision. Power lines, cell phone towers and birds,
present collision risk and a significant rise in operating cost.
2.4.4 Mining
There are different mining methods and techniques such as surface mining, sub-surface mining and
high wall mining. Over time, mining operations generally impact adversely on their surroundings.
Mining operations can lead to land subsidence and quarry wall collapse. Remote sensing, using drones
and satellites, can monitor and detect change to the surroundings. This way hazards could be
identified in advance and risks may be mitigated effectively to prevent catastrophic failures.
2.4.4.1 Drones platform application
Drones were deployed in open pit mines to conduct 3D mapping and monitoring. This was to help
identify unstable areas at risk of wall collapse. Video images were acquired from drones and integrated
with Terrestrial Laser Scanning (TLS) devices.
Figure 2-21 describes two system components, namely the aerial system and the ground system. The
aerial system comprises a remote sensing suite, an automatic control and a drone platform. The main
functions are the uploading of flight routes and flight monitoring.
The ground system consists of route planning, ground control and data reception. The ground system
is for the design and scheduling of flight routes, receiving flight data and controlling flight path.
Figure 2-21: Workflow Adapted for 3-D Mapping of Open Pit Mines (Xiaohua, et al., 2015)
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The drone used in the mapping and monitoring of the open-pit mine had the following specification.
Table 2-14: Characteristics of Drone Used in 3-D Mapping of Open Pit Mines (Xiaohua, et al., 2015)
Specification Quantity
Length (m) 1.8
Wingspan (m) 2.6
Payload (kg) 4
Take-off weight (kg) 14
Endurance (h) 1.8
Flying height (m) 300–6000
Flying speed (km/h) 80–120
Flight mode Manual, semi-autonomous and autonomous
Launch Catapult, runway
Landing Sliding, parachute
Sensor Digital camera, video camera
Spatial Resolution of Image 15cm with 75% forward overlap and 55% side
lap
Figure 2-22: System Description for 3-D Mapping of Open Pit Mines (Xiaohua, et al., 2015)
The open pit mine experiment and study took place in Kunming City, Yunnan Province, China. Three
open-pit phosphate mines: Jianshan - 7.8 km2, Kunyang - 18 km2, Jinning - 43 km2 were earmarked for
the experiment. Mine site elevation ranged between 1888 m - 2485 m above sea level. Over a flight
time of 143 min, 1688 images with a spatial resolution of 15 cm were collected and stored on a
memory card. Parameters like position, pitch, roll and heading were also recorded for each image. A
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forward lap of 75% and a side lap 55% were maintained. Forward and side lap refer to percentage of
overlap between images in respective directions. Accuracies obtained during the imaging are shown
in Table 2-15 with Geo-positioning accuracy figures referring to the accuracy with which the location
was measured.
Table 2-15: Accuracies Obtained in Imaging the Jianshan Area (Xiaohua, et al., 2015)
Type of accuracy Accuracy value
X Y Z
Geo-positioning accuracy 3.91 m 1.76 m 8.51 m
Geo-positioning accuracy with bundle adjustment in POS and GCPs
0.14 m 0.09 m 0.64 m
Geo-positioning accuracy with bundle adjustment in POS, GCPs and 3D point clouds.
0.13 m 0.09 m 0.62 m
Images of DOMs and DSMs are shown in Figure 2-23. These accuracies are compared to those
obtained from satellites which have an average accuracy of 5m.
Figure 2-23: Hill-shaded DSM (with a cell size of 2 m) in Jianshan area (a) and the Generated DOM (with a Spatial Resolution of 0.15 m) in the Jianshan Area (b)
2.4.4.2 Satellite Platform Applications
LANDSAT TM and SPOT (P+XS) were deployed to collect images of lignite mining in Poland. The images
were used to monitor and assess the environmental effects of the Belchatow Mining Energy Complex
(BMEC) (Mularz, 1998). Lignite deposits of 55m thick lie 150-250 m below the surface at that mine.
The mine produces 30% of all lignite in Poland.
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The monitoring exercise proved SPOT and LANDSAT images could be used to map environmental
effects from space. Changes in landscape, land-use/land-cover and coniferous forest degradation
were also observed. Figure 2-24 contains a merged image from LANDSAT TM and SPOT. Table 2-16
contains the remote sensing payload specifications.
Table 2-16: Satellite Platform Performances (Xiaohua, et al., 2015)
LANDSAT-TM
(MULTISPECTRAL) SPOT (PANCHROMATIC)
SPECTRAL RESOLUTION (µM)
1. 0.45-0.52 (Blue) 2. 0.52-0.60 (Green)
3. 0.63-0.69 (Red) 4. 0.76-0.90 (NIR) 5. 1.55-1.75 (MIR) 6. 2.08-2.35 (MIR) 7. 10.4-12.5 (TIR)
0.455 – 0.525 (Blue) 0.530 – 0.590 (Green)
0.625 – 0.695 (Red) 0.760 – 0.890 (NIR)
SPATIAL RESOLUTION (M)
30 x 30 120 x 120 (TIR)
Panchromatic - 1.5m Multispectral - 6.0m (Blue,
Green, Red, NIR)
TEMPORAL RESOLUTION (REVISIT IN DAYS)
16 26
SPATIAL COVERAGE (KM) 185 x 185 60 x 60
ALTITUDE (KM) 705 832
Figure 2-24: Merging of LANDSAT TM and SPOT Pan Images (Jaakkola method) (Xiaohua, et al., 2015)
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The BMEC study led to the following conclusions.
1. High resolution SPOT images recognized small objects and features. This helped to
detect changes over time
2. Image quality was satisfactory and the data provided allowed comparison over lapsed
time.
2.5 Conclusion and Recommendations
This chapter examined the workings of drones and satellites in three areas of remote sensing
applications. It was shown drones could either work in cooperation with satellites, they could be
deployed to complete a satellite initiated mission and, in a few niche cases they could even replace
satellites in the delivery of missions.
The climate studies application is a good example where drones and satellites could work in
cooperation. The global overview of satellites allows data collection on a large scale. They are used
either to track changes to an entire area to, for example, monitor contraction in ice sheet cover or to
identify where more extensive research might be warranted. Drones, based on satellite data, may be
deployed to target locations to collect more precise data on a regular and frequent basis, thereby
allowing both platforms to work together to enhance forecasting and scientific studies.
For resource management, drone deployment could be targeted to complete investigative work
started off by a satellite. Drones cannot engage in all types of applications because of payload
constraints. Satellites also produce images which may net be detailed enough for a specific mission
because of their restricted top only view and lower resolution images. The said constraints mean that
in some tasks it will be necessary to deploy both platforms to complete the miss.
In disaster management, the trend is different. Catastrophic scenarios demand rapid response. The
unique rapid intervention capability of a drone makes the use of satellites, in those situations, almost
obsolete. Rescue teams would benefit from real-time data collected by drones flying over a designated
disaster zone. Moreover, depending on the extent of disaster, the area could be covered by one or
more aircraft.
Table 2-17 provides an overview of the chapter findings.
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Conclusion and Recommendations
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Table 2-17: Comparative Platform Characteristics for Different Remote Sensing Platforms (Matese, et al., 2015)
Small drones Large drones Satellite
Mission
Range -- + ++
Flexibility ++ + -
Endurance -- ++ ++
Cloud cover dependency ++ + --
Reliability 0 + ++
Processing
Payload 0 + ++
Resolution ++ + ++
Precision ++ + 0
Mosaicking/ geocoding effort
- 0 ++
Processing time 0 + +
(++ optimum, + good, 0 average, - poor, -- very poor)
Superior spatial resolution offered by the drone is considered one of its important and unique selling
points. That position, however, is under threat as very high-resolution (VHR) satellites, for example
LandSat-7 and WorldView2, are providing panchromatic images with resolutions below 50 cm. There
are only a few VHR satellites in operation for now, but their number is expected to increase. This will
narrow the gap between drone and satellite optical performance. Flexibility and non-dependency on
clear skies are also unique features of drones and remote sensing tasks and missions that demand
those features will best be performed by drones.
The quality of data collected through remote sensing is a function of two important criteria; level of
detail and scene size. Drones comply with the standards set to define acceptable levels of detail and
scene size and so are deemed to be an remote sensing platform. Figure 2-25 illustrates remote sensing
technology with respect to scene size and complexity. Spatial coverage by a drone, due to its low flight
altitude, is inferior to that of a satellite. The drone capability, however, to observe smaller areas in
more detail makes up for that deficiency. Working together, a large area could be observed and sensed
efficiently by a satellite whereas drone technology could fill in any missing detail (Nex & Remondino,
2014). It is, therefore, important and potentially valuable that mission planners consider joint
drone/satellite operations as part of their evaluation of mission options.
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Conclusion and Recommendations
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Figure 2-25: Available Geomatics techniques, sensors, and platforms for remote sensing, according to the scene dimensions and complexity (Nex & Remondino, 2014)
In the next chapter, we take a look at future trends in drone technology. We identify where change
might take place and how change could lead to the further development of drones and their capability.
3 – Future Trends in Drone Development
Introduction
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3 Future Trends in Drone Development
3.1 Introduction
In Chapter 2 it was shown drones could work in a range of applications where their effectiveness, in
relation to satellites and meeting mission objectives, varied according to mission requirements and
characteristics. Operational constraints such as flight duration and range created barriers to take up
in some areas of operation. Accuracy in positional data and limited ground coverage, due to low
altitude flying, excluded drones from missions requiring precision.
This chapter aims to investigate the evolution of six technical areas affecting the performance of
drones and how the constraints identified in Chapter 2 could be overcome. The six areas are:
- propulsion
- power source and energy management
- autonomy
- swarming formation
- material and design
- sensors and payload
Most of the above specialized areas have been in development for many years. The Lithium-ion
Polymer (Li-Po) battery, for example, has been developed and is now used in smartphones, notebooks
and other electric devices, including drones. The use of glass and carbon fibers is now common in
drone manufacture, allowing better mechanical properties e.g. mass, resistance, stiffness, etc. Printing
manufacturing technology is maturing and has many applications in prototyping and is making drones
more affordable and flexible. Furthermore, the miniaturization of electronics has benefited cameras
and controllers.
The above represent a few illustrations of technology advance so far, whereas the sections that follow
are intended to provide an indication of how technology may evolve, say in the next twenty years, and
further improve drone capability and performance.
3.2 Drone Propulsion
3.2.1 Ionic Thruster
Drones move through the air either by propellers, or jet engines, powered by electrical energy or high
density hydrocarbon fuels. Both work essentially in the same way; compressing air flow to the rear at
an elevated velocity. Those propulsion methods produce energy waste in the form of sound and heat,
both of which are detectable. In military applications, sound and heat are considered undesirable by-
products for they could be detected by opposition forces allowing them to take defensive action. For
this reason, the US Armed Forces are developing new stealth technology for drone applications
(Franzen, 2013).
Lockheed Martin, a defense contractor for the US Government, is investigating Ionic propulsion for
potential aircraft applications. Ionic thruster propulsion is the method of producing a strong
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electromagnetic field between two electrodes and ionizing the air in between them. By ionizing the
air around the vehicle, it draws opposite charges past itself producing thrust. This propulsion is silent;
it produces no heat signature, and is suited to stealth reconnaissance military applications. Figure 3-1
outlines a typical lightweight thruster design (Masuyama & Barrett, 2013).
Figure 3-1: Typical Ionic Thruster Design (Masuyama & Barrett, 2013)
A 240 g vehicle uses 40 kV of electricity to produce enough thrust to lift off the ground. A drone of a
few tens of kilograms would need thousands of kilovolts to produce the required lift. With more
research and development Ionic Propulsion could become the technology for future drone
applications (Masuyama & Barrett, 2013).
3.2.2 Flapping Wings Mechanisms
Figure 3-2: BionicOpter flapping wing from Festo (Festo, 2013)
Engineers take inspiration from nature to create small flight mechanisms. The proposed propulsion
system involves ‘flapping wings’ (Nguyen, et al., 2015) (Nan, et al., 2015). The purpose of the
mechanism is to convert rotary motion from a motor into flapping action, making drones look like
flies.
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The BionicOpter drone by Festo, a German engineering company, copies the flight of the dragonfly.
The complex mechanical system is designed with 13 degrees of freedom and a wingspan of 63 cm
weighing 175 grams. The limitation of this system is in its control characteristics (Festo, 2013).
With its team of McMaster University, Matthew Minnick is using quartz piezoelectric actuators and
supercapacitors to make micro-structures that enter into resonance. The final goal is to design drones
with a size ranging from fruit flies to dragonflies (less than 1 cm) (Minnick, et al., 2015). The same kind
of research is being conducted in Delft University. Compliant structures are Investigates to develop
lightweight Flapping Wing Micro Air Vehicles (FWMAV) (Peters, et al., 2015). Such structures can
decrease friction, wear and mechanical complexity. So far, control is the main limitation. The Minnick’s
drones can perform random flights but complex applications require a total navigation control.
3.3 Power Source and Energy Management
Drone performance at present is restricted because of limited power, low battery capacity and limited
on-board energy management software intelligence. Overcoming those limitations will achieve higher
levels of performance and the emergence of new applications. Some ongoing research is described
below.
3.3.1 Energy Management
In January, 2016 a US company, announced its new generation of flying cameras which included
cameras for payload applications (Ambarella, Inc., 2016). The cameras had a power consumption
rating under 2W.
The new cameras featured advanced 3D electronic image stabilization which eliminated the need for
mechanical gimbals lowering structural weight, thus improving aircraft capability and performance.
New capability provided wide-angle lenses with minimal image distortion.
“Green Flight” software is for monitoring flight energy consumption in mission mode, providing real-
time optimization to enable longer autonomous missions (Corral, et al., 2011). The software is only
applied to quadrotor drones at present. Green Flight collects flight and battery information and, using
an online data analysis function, recommends energy efficiency actions to the pilot.
3.3.2 Power Source
There are several ways of powering up a drone; some involve combined sources, namely batteries
used in conjunction with solar power (Tech in Asia, 2016).
3.3.2.1 Solar energy
AtlantikSolar is a 6.8 kg fixed wing drone that uses solar panels to charge its batteries (Autonomous
Systems Lab, 2015). It first achieved 28 hours’ flight (Autonomous Systems Lab, 2015) and shortly after
that it achieved nearly 80-hours of flying, breaking the endurance record for its class (below 50 kg
total mass and also Low Altitude Long Endurance (LALE) aircraft). The operation was fully-autonomous
98% of the time. Night time power consumption was around 35-46 W (Autonomous Systems Lab,
2015).
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The Qinetiq Zephyr is a light-weight (53 kg) carbon fiber construction with a solar powered battery
charging functionality. It is a HALE drone also dubbed as HAPS (High Altitude Pseudo Satellites) by its
creator Airbus. It holds the record for continuous flight, circa 336 hours for all drone types.
Solar energy application minimizes the need for landing to recharge on-board batteries.
Improvements in solar energy technology are likely to lead to significant market development for
drones.
3.3.2.2 Hydrogen fuel cells
The Intelligent Energy Company announced extended flight times for its test drone equipped with fuel
cell technology. The drone flew which flew for several hours, a significant improvement on an average
flight time of twenty minutes with batteries (BBC News, 2016).
The fuel cells are located on the top. The tank below the drone is loaded with hydrogen. The fuel cell
system of Proton Exchange Membrane (PEM) splits hydrogen into electron and protons at the anode.
The electrons travel across a solid polymer membrane, via an external load circuit, generating
electrical output from the fuel cell. The success of this power source could advance drone capability
significantly.
Figure 3-3: Fuel Cell to Power a Drone
3.3.2.3 Laser Beam
LaserMotive was founded by a group of people who were involved in the X-prize Space Elevator
Challenge. PowerLink, the company’s product charges batteries by locking the drone on to a laser at
its beam receiver.
The light in a Laser beam is transmitted through the air. Arriving on specialized photovoltaic cells the
beam is converted into electricity. Laser beams can be sent though air, vacuum of space or fiber optic
cable (LaserMotive, 2016). However, Laser beams can be pointed only to targets in line-of-sight.
Telescopes and mirrors can be used to aim the beam to target drones outside the direct line of sight.
By using a Laser range to charge the drone’s batteries, activity can be significantly extended
(LaserMotive, 2016).
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Power transmission via radio waves may also be considered in outer space applications. This
technology could allow a multitude of drones to fly continuously to perform remote sensing activities.
Figure 3-4: Transmission of Energy through Laser Beams
3.3.3 Innovative Battery Technology
3.3.3.1 Nanotube-Based Batteries
“Nanyang Technology University in Singapore, announced in 2014, that they had developed a Li-ion
battery capable of 20 years of deep discharge using new nanotube material’’ (Johnson, 2014).
The new nanotube battery has fast recharge cycles reaching seventy percent capacity in two minutes.
The divergence from the traditional Li-ion batteries is in the anode where the graphite is replaced with
a nanotube synthesized titanium dioxide (TiO2) gel (Nanyang Technological University, 2014).
3.3.3.2 Aerogel Batteries
The School of Chemical Engineering at Sungkyunkwan University, South Korea, announced in February
2015, that they successfully developed a porous graphene aerogel electrode material by way of
combining of polyvinyl alcohol and graphene. A battery made of the new aerogel anode could be made
ninety percent smaller but still deliver the same performance. Future batteries could, therefore, carry
ten times more capacity but for the same size (Wang, 2015).
3.4 Level of Autonomy
Drone autonomy is a characteristic that assumes greater significance when operational requirements
grow in complexity. Drones are at present autonomous enough to fly a pre-defined path to execute
simple tasks without intervention. Advanced military drones can recognize and follow a moving target
but need assistance from an operator. Drones, are not yet able to go through a window or react to an
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obstacle along their flight path. Robustness in difficult weather is also a problem for most platforms.
The missing capabilities, if developed would enhance drone performance significantly, and help
resolve some of the outstanding legislation issues linked to traffic management (Protti & Barzan,
2007).
The working group Autonomy Level for Unmanned Systems (ALFUS) developed a framework to
quantify autonomy for drones (Huang, et al., 2005). The model, shown in Figure 3-5, works along three
axes, measuring a range of variables on each. The three axes comprise:
- mission complexity
- the human interface
- and the environmental difficulty
Figure 3-5: ALFUS Metrics (Huang, et al., 2005)
Advances in technology including enhanced artificial intelligence (AI) will improve drone performances
along the three axes.
3.4.1 Sensing the Environment
Situation Awareness (SA) is defined as “The perception of the elements in the environment, the
comprehension of their meaning, and the projection of their status in the near future” (Endsley, 1988).
Able to sense and understand its environment, a drone could interpret situational information to
make own decisions and fly with greater certainty. This could be achieved through the integration of
a systems of sensors (Hew, 2006). New sensor technology could bring about new levels of intelligence
such as:
- touch
- hearing
- smell
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- depth of vision
Smell, for example, could inform a drone of a forest fire and hearing may raise warnings about the
presence of animals. Making use of sensors will require significant advances in computer performance.
3.4.2 Image Recognition with Machine Learning Algorithms
Image recognition technology is widely used in face recognition applications to enable cameras to
detect faces. This method may also be extended to object recognition.
Image recognition may involve the application of machine learning techniques. “Machine learning
works with data and processes to discover patterns that can be later used to analyze new data”
(Konstantinova, 2014). Machine learning can give accurate results in a short period. A landscape could
be segmented into regions as shown in Figure 3-6.
Figure 3-6: Object Recognition in a Street Environment (Payet & Todorovic, 2010)
Image recognition technology could assist in collision avoidance in flight or monitoring animals on a
game reserve. The main technical challenge is to speed up processing time for the application to run
in real time and where broadband is not accessible, a large data base would be carried on board.
3.5 Formation Flying (Swarming)
Autonomous network of drones could be used in a variety of applications. Software will allow
formation flying under the command of a single drone acting in lead.
A swarm of small drones may be used to track vehicles, enable communications, capture signals, and
provide a bird’s eye view of a landscape. In case of remote sensing applications, swarms could provide
imaging over mines, forests, fields etc., at a faster rate than that of a single large drone. Here are some
examples of networks and what they can do.
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3.5.1 Mesh Networking of Drones Based on Software Development
Mesh Networking is sharing real-time positional data to maintain autonomous formations. Mesh
Networking and decentralized control bring about advantages that include low latency, seamless
addition and removal of vehicles and network relay functionality (Merrill & Becker, 2015).
3.5.2 Simple Teaming Approach
A successful test involved two drones each carrying a Radio Frequency (RF) detector tuned to a range
of frequencies. Two beacons, a decoy and a target, transmitted from the ground. The test was to
illustrate that the drones could work together to locate the target beacon without human interaction.
The concept could be extended to test multiple drones. Figure 3-7 represents the test arrangements.
Figure 3-7: Simple Teaming Approach Involving Two Drones (Bamberger Jr., et al., 2006)
500 feet = 152 m ; 50 knots = 93 km/h ; 0.5 nautical miles = 0.93 km ; 2 nautical miles = 3.7 km
3.5.3 Dynamic Surveillance Network
This network may be used for military operations in urban environments. The swarms can be self-
deployed ‘fire-and-forget’ assets operated by a soldier. They can reconfigure for optimal
communication or adapt to parts failure in battle (Bamberger Jr., et al., 2006). Figure 3-8 depicts the
operation of a Dynamic Surveillance Network. This system operates in four phases as follows:
1. Sensor Deployment Phase: sensors are deployed but do not communicate with each other
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2. Sensor Discovery Phase: drone solves problem based on an approximate estimate of sensor
location and numbers. Flight pattern is assigned to each drone and the location of each sensor
is recorded
3. Data Exfiltration Phase: best course of action, based on optimum coverage, is decided for each
drone
4. Adaptation Phase: system adapts to multiple change. Single failure in a sensor may be
detected leading to autonomous reconfiguration.
Figure 3-8: Graphical Depiction of a DSN Scenario Using Two Drones: (a) Sensor Deployment (b) Sensor Discovery Phase (c) Data Exfiltration Phase (d) Adaptation Phase (Bamberger Jr., et al., 2006)
3.5.4 Stigmergic Potential Fields Approach
This swarming strategy copies the interaction and behavior of termites during nest building. Co-
operation here is organized by hierarchical agents, through indirect coordination. They alter the
environment or respond to the environment while in transit. There is no mutual negotiation between
the agents to decide on a likely course of action. Stigmergy is driven by flight formulae that define and
co-ordinate movements, temporary acts and the allocation of tasks amongst cooperating drones.
There are three forces that drive this strategy, namely Attractive, Repulsive and Complex. The net
force on a drone comprises the summation of all three forces. Figure 3-9 represents the architecture
for a Stigmergic Potential Fields Approach (SPFA) strategy.
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Figure 3-9: Hierarchical Control Architecture in SPFA (Bamberger Jr., et al., 2006)
3.6 Material and Design
This section investigates trends in the design and production of materials driven by current or
emerging technologies.
3.6.1 Biodrones
Biodrones is an area of development for space exploration. Scientists at NASA Ames, California, are
researching the production of synthetic and bio-degradable drones. The outer layer of a Biodrone
would be made of mycelium cells, a mushroom-like material, covered in waterproof protein similar to
that used by paper wasps to coat nest exteriors. On-board control circuitry would be a 3D printed part,
made from silver nanoparticles, capable of conducting electricity, and manufactured by 3-D printing.
Parts that would not be bio-engineered are the 3D printed plastic propellers. On board batteries, still
in development, would be biologically engineered using microbial fuel cells and photosynthetic solar
array technologies (3DR, 2014).
The main advantage Biodrones present is in saving cargo space and mass. Biodrones could be grown
in situ, for example, in a settlement on Mars. The only material to transport from Earth would be a
few flasks of cells.
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Figure 3-10: Micro Biodrone, Proposed by NASA Ames and Ecovative Design (William, 2016)
3.6.2 Drones to Grow
The British Defence firm BAE Systems announced its intention to develop “Chemputer”, a drone
prototype grown organically in vats, using an advanced chemical engineering process. Chemputer is a
promising technology, still in concept stage and details about are scarce. If successful, Chemputer
would raise production efficiency significantly as it takes only a few weeks to manufacture (O'Hare,
2016).
Figure 3-11: Concept Illustration of Drones Growing Process (O'Hare, 2016)
3.6.3 Floating Drones
The Synchronized Position: Hold, Engage, Re-orient, Experimental Satellites (SPHERES), was originally
inspired by Star Wars. The small drones were designed by NASA for use on the International Space
Station (ISS). Since Expedition 8 in 2003, three SPHERES have been flown aboard the ISS Kibo
laboratory module. They act as free-flying platforms able to perform simple tasks and participate in
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micro-gravity experiments. Their structure can accommodate many devices, making them modular
and easy to use.
Figure 3-12: Astronaut Scott Kelly Shows off the SPHERES Satellites on ISS (Credits: NASA/ISS)
Each drone is an 18-sided polyhedron. It is roughly the size of a volleyball and is powered by two 12 V
battery packs made of eight 1.5 V AA battery cells. Motion is effected by twelves thrusters using
compressed CO2 producing a maximum linear acceleration of 0.17 m/s² with an accuracy of 5 mm. For
altitude control and positioning SPHERES are fitted with three accelerometers, three gyroscopes and
are embedded with 23 ultra-sound sensors (Enright, et al., 2014).
So far, SPHERES have been used in projects involving computer vision-based navigation (Spheres-
VERTIGO) and electromagnetic formation flight (Spheres-RINGS). Spheres can be assembled to
represent more complex structures. Spheres-SLOSH, for example, aimed to simulate how rocket fuel
moved inside storage tanks.
In the long run, the goal would be to repair or refurbish older or non-functional satellites in Earth
orbits, or conduct maintenance on vehicles in deep-space.
3.7 Sensors and Payload
Mission needs, economic considerations, market development and technical advances drive drone
applications into the future. Remote sensing is the most promising application in civil or military
applications. Developments in payload sensor technology will, therefore, have a major influence on
the future of drones.
3.7.1 Electro-Mechanical Systems
For remote sensing applications, sensors mainly comprise visual range detectors, infrared detectors,
multispectral sensor and hyperspectral sensors, LiDAR and acoustic sensors. Sensors are available in a
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variety of resolutions, mass, volume and dimensions. But regardless of sensor type, advances in
technology will enhance their performance.
For example, a Miniaturized Electro-Mechanical System (MEMS) is a miniature device comprising
integrated mechanical and electrical sub-systems that contain levers, springs, deformable
membranes, vibrating structures and resistors, capacitors, inductors respectively. MEMS has been
used in several applications including accelerometers and gyroscopes. MEMS technology offers weight
reduction, lower cost and greater drone reliability through system redundancy (Legifrance, 2015).
Figure 3-13: MEMS Hysitron, Inc.
Other emerging technologies such as Integrated Computer Application Chips (ASIC) are also destined
to influence sensor size and weight. They will extend function and raise efficiency by fusing multiple
data sources.
Here are examples of emerging technologies and complementary developments (Legifrance, 2015):
- Miniaturization, including advances in materials sciences
- Memory and data storage growth
- Rising computing power
- Laser advancement
- Economies of scale
- Standardization by adopting universal data formats, data buses, other enabling standards leading
to availability of a wide variety of plug and play sensors
3.7.2 GPS Enhancement
Global Positioning Systems (GPS) provide accurate positioning and navigational information that may
be applied to a drone in flight to improve its performance. There are, however, inherent inaccuracies
in GPS which can adversely affect drone performance. A suggested way of improving GPS accuracy is
to find the sources of error and remedy them (Driver, 2010). Error sources include the following:
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Table 3-1: Error sources in drone localization by satellite
GPS Error Error Source
Dilution of Precision - Signal-in-space range - Ephemeris - Atomic clock precision
Atmospheric - Ionospheric - Tropospheric
User Equipment - Multipath - Receiver noise
In addition to eliminating sources of error and their impact on accuracy, the application of assistant
technologies as an alternative strategy for error reduction is also feasible. Assistant technologies
include INS, terrain matching navigation, starlight guidance.
The Inertial Navigation System (INS) uses acceleration, detected by motion sensors, to calculate
position. It is reliable, not affected by weather or by light. Its accuracy over short flight times is based
on continuous calibrations derived from positions given by GPS. Developments in the laser gyroscope,
the fiber-optic gyroscope and other advanced technologies, would further increase the accuracy of
the INS. According to the Massachusetts Institute of Technology, integrated INS/GPS would reduce
GPS error from approximately 10 m to no more than 1 m in the near term, based on Circular Error
Probable (CEP) (Schmidt, 2010).
3.8 Conclusion
A major development even in one of the fields discussed in this chapter would greatly benefit the
drone industry. More efficient propulsion, for instance, would allow larger payloads. Better batteries
would increase flight duration, currently a real constraint to market growth. Improved energy
management would improve and extend flight times. Improvements in software algorithms and
advances in communication would help drones participate in more complex missions. New materials
would make drones lighter, cheaper, and potentially easier to manufacture.
Drones may look very different in the future. It is suggested that key drivers for change will be
advances in battery performance and miniaturization, extending flight duration and mission
complexity respectively.
In the next chapter the remote sensing market is examined from a business angle. The chapter looks
at the health of the drone market and the key players driving development in that market. Investment
levels are examined and the efficacy of drone use compared to satellites in the provision of remote
sensing services is assessed using researched financial data.
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4 Remote Sensing Market
4.1 Introduction
In Chapter 3, future advances in drone technology were discussed and examples of how improvements
in battery design, on board energy management and propulsion will change drones were given.
Research in materials and miniaturization were reviewed and the impact of progress in those areas in
extending the application of drones in terrestrial and space applications was considered.
In this chapter the remote sensing market is examined from a business angle and the health of the
drone market including its key players driving development is reviewed. Market drivers and concerns
over market development are identified and reviewed. Drone capabilities, their strengths and
weaknesses are assessed and characterized. Performance and technology trends in the remote
sensing market along with the effect they have on remote sensing commercially are also discussed.
Next, the commercial drone market is presented. This includes both the current state in commercial
drone manufacturing and in the emerging service market. Related markets that will impact drone
development are studied including those for imagers, batteries, and 3D manufacturing. Drone lifecycle
costs are presented and compared with those of other traditional remote sensing methods.
Finally, three target markets in remote sensing are analyzed: resource management, climate study,
and disaster management. The suitability of drones to operate in those markets is demonstrated and
the potential economic advantages are highlighted.
4.2 Market Overview
4.2.1 Justification for Remote Sensing Activities
Terrestrial remote sensing has developed to become a major field in space technology applications
internationally. Many have speculated about what motivations drive investment in remote sensing
missions (Belward & Skøien, 2015) (Lauer, et al., 1997). The reasons may be summarized as follows.
1 The Need for Better Information
Remote sensing information is used to improve, amongst others, resource and land management. This
allows countries to meet demands generated by population growth, to manage city development,
control natural resource usage, and to stimulate efficiency gains in agriculture and mining. For
companies, remote sensing information is used in many ways, from smart farming and fishing to
replacing traditional surveying methods in contour mapping. Regardless of the application, gaining
accurate information about the Earth has proven to be valuable for a host of players at the local,
national and international level.
2 To Secure National Interests
Nationally, remote sensing data can be used in detecting, managing and supervising resources and for
industrial development. What stands out, however, as a justification for remote sensing missions is
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the offer of independent route to data acquisition. This is more of a political interest than economic
and has significantly influenced the development of remote sensing services internationally. Several
African nations, for example, have stated their desire to no longer remain passive consumers of Earth
observation data (Ngcofe & Gottschalk, 2013). In deploying remote sensing missions, political
justifications have been found to be at same level of importance and priority as economic interests.
3 Commercial Opportunities
Remote sensing missions and the related support activities generate favorable spin-off opportunities
for market and industry development. While there are commercial opportunities in using data from
remote sensing, the trickle-down effect from remote sensing can also benefit ground segment,
launcher, data processing and data analysis industries. Government investment in terrestrial remote
sensing, therefore, may be justified on the basis that high technology industries could be created
around remote sensing to bring about skilled jobs to the country.
4.2.2 Remote Sensing Market Status
Remote sensing follows one of three market models: Private, Public-Private Partnership (PPP), and
Agent.
The Private model comprises companies financing their hardware requirements from private sources.
A typical example is the USA model for remote sensing where NOAA issues satellite licenses for a range
of resolutions and spectral bands to companies who subsequently exploit those purchased resources
for commercial gain. Borne out of the American principle that public entities should not engage in
profitable endeavors, the private model frees up companies to fund their own remote sensing
equipment and systems, but offers them more scope in exploiting the data they acquire.
Next are PPPs where the government commissions the hardware and private firms are paid to operate
it. A typical example of PPP was in France, when the Centre National d’Etudes Spatiales (CNES)
commissioned Airbus to operate its SPOT Satellites. The model has since been adopted in several
countries including Canada and Japan. The high start-up costs of remote sensing are handled publicly
with the expectation that the government would benefit from the results of that investment.
Finally, the Agent model is one that is becoming increasingly popular. In this model, enterprises are
given the responsibility of processing remote sensing data without having to collect it. Results from
data analysis are then used for commercial operations. Global expenditures are increasingly favoring
the agent model, as data analysis and value-added products are expected to account for more revenue
than remote sensing satellite manufacturing over the next decade (Wang, 2015).
On a corporate scale, DigitalGlobe dominates the remote sensing market, accounting for over 60% of
revenues. Airbus Defence and Space at 20% and E-GEOS at 5% round out the top three. Nationally,
the US was the first player in the remote sensing market, a field which was traditionally contested by
the Americans and the Soviets. Today, 34 countries have global coverage remote sensing satellites, as
presented in Figure 4-1.
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Figure 4-1: Global distribution of civilian polar-orbit land-imaging satellites, 1972-2013 (Belward & Skøien, 2015)
Countries are steadily increasing their expenditures in terrestrial remote sensing, especially in space
solutions. This is leading to increased interest in the field by countries, led by the drive for independent
access to data and the potential of spin-offs helping to grow a local high-tech market.
4.2.3 Market Demand
The remote sensing market has experienced strong growth over the last two decades. Longer
spacecraft life has led to a moderation in the need for continuing and significant capital investment.
A rise in demand for good data has meant a growing market. The two factors have led to favorable
market conditions resulting in new players entering the market. Those trends are reflected in the
number of active satellite remote sensing missions, as shown in Figure 4-2.
Figure 4-2: (Left) Number of operational civilian polar-orbiting Earth-imaging satellites, 1972-2013; (Right) Launches per year (Belward & Skøien, 2015)
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The growth in the remote sensing industry shows no signs of abating. As the Committee on Earth
Observation Satellites points out, “agencies are operating or planning around 260 satellites with an
Earth observation mission [from 2015 to 2030]”.
The principal end-use for EO data is for national security management and the collection of
intelligence. Internationally, thirty five percent of EO demand for data in Asia and sixty percent of the
same in North America is military in nature. The public sector makes up the rest of the demand, with
energy and resource management being its primary interest. Management of life resources, crops and
livestock, is also a major priority. Finally, industrial and commercial applications of remote sensing
data account for the balance, totaling approximately 10% of the market demand, although this is
expected to rise in the coming years (Wang, 2015).
4.2.4 Factors Influencing Market Growth
Developments in the remote sensing market are caused by several drivers. Firstly, there is a continuing
need for better data, which forms the basis of all downstream remote sensing applications. This is
characterized by trends towards higher spatial, spectral and radiometric resolutions (see Figure 4-3).
Figure 4-3: Highest panchromatic, SAR and multispectral resolutions achieved per launch year (Belward & Skøien, 2015)
The push for higher resolution has been, in part, a response to the second driver that being the
development of the China-Brazil Earth Resources Satellite (CBERS) which led to the release of data,
free of charge, to China and South America as a means to promote technological development
(Câmara, 2006). This led to two major events in the remote sensing market: USA releasing all past,
present and future Landsat data to the public in 2008 (NOAA, 2010), and the European Union (EU)
declaring in 2013 that all Sentinel data coarser than 10 m resolution would be open source.
The release of CBERS free data meant that the primary reason for launching remote sensing missions
by third parties, to provide equivalent or lower quality images, would be mainly political. Free data
release also served to promote the market for data processing, which led to the opening up of the
Res
olu
tio
n (
m)
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Agent market. Furthermore, it meant that only remote sensing data collected at a spatial resolution
below 10 m would be commercially viable.
Along with the trend for better resolution, there has been a movement towards cheaper and smaller
satellites. Encapsulated in a NASA trend report, Faster Better Cheaper, the new millennium has seen
a large increase in sub-500 kg satellites (Xue, et al., 2008). Often flying in lower orbits, and at reduced
launch and development costs, those satellites are expected to make up the bulk of new EO and
environmental monitoring missions (Foust, et al., 2008). As a result, barriers to entry in remote sensing
have been lowered allowing more countries and companies to launch missions.
Increased longevity of satellites is the next major trend affecting terrestrial remote sensing. Satellites
now have lifetimes of ten to twenty years, spreading capital and revenue investment over a longer
operational period. This trend, however, comes with a disadvantage: several years of development
and a longer operational lifetime mean that remote sensing payloads on satellites quickly become
outdated (Roy, et al., 2014). This results in a supply and demand gap resulting in margin loss as in-
service spacecraft see their functionality replaced by newer models launched by competitors. While
technically, longer spacecraft life is more feasible than ever before, the benefits of lower investment
in fleet should be weighed up against loss of imaging quality and, possibly market share, leading to a
fall in revenue.
Legal restrictions have impacted on the remote sensing market too. The US Department of Commerce,
for example, had restricted the provision of commercially available satellite data to above 50 cm
resolution. This law had led to market development in aerial imagery but had also resulted in
restricting advances elsewhere. In 2014, however, those restrictions were lowered (DigitalGlobe,
2014), allowing the commercialization of satellite remote sensing data at resolutions reaching 31 cm.
The demand for images from aerial platforms, therefore, begins at sub-30 cm resolutions.
4.2.5 Potential of Drones in the Remote Sensing Market
As a novel platform for remote sensing, drones are positioned to take a large market share. Cheaper
than aircraft imagery because of reduced weight, system and training costs they are poised to mainly
complement and, in some applications such as disaster management, threaten satellites.
Drones readily meet the criteria for market acceptance. Drones provide much higher resolution data
across all spectral bands, particularly in IR and provide more precise information than that currently
available on the market. Costing significantly less than a satellite, drones can be used by more
countries to cheaply and efficiently provide independent remote sensing data access. Beyond reduced
costs, the military deployment potential of drones makes them of great interest to national policy
makers too. Drones are also at the forefront of commercial expansion with capital investment in drone
manufacturing having risen sharply in the last two years (see Chapter 4.3.2). Down-stream data
applications for higher-resolution images are also increasing commercial opportunities in high-tech
fields in general.
Drones also fit perfectly into the current remote sensing market structure. With lower development
costs, private enterprises are more readily able to develop full-scale remote sensing programs and
missions. Furthermore, the PPP model is being used widely to fund drone projects with increased
complexity, facilitating the development of new technology. The top eleven drone manufacturers of
2014-2015 are using the PPP model as illustrated in Table 4-1.
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Table 4-1: Top Drone producers for 2014/15 (Harress, 2014)
RANKING COMPANY COUNTRY
1 Boeing USA
2 General Atomics USA
3 Lockheed Martin USA
4 Northrop Grumman USA
5 Aerovironment, Inc. USA
6 Prox Dynamics Norway
7 Denel Dynamics South Africa
8 SAIC/Leidos Holdings Inc. USA
9 Israel Aerospace Industries Israel
10 Textron USA
11 General Dynamics USA
12 DJI Innovations* China *NON-DEFENCE COMPANY
Data analysis and downstream application of satellite data apply to remote sensing data collected by
drones too. This activity favors the Agent model.
Drones conform to many technology trends in the remote sensing market at present. They offer
across-the-board better resolution than aircraft and satellites for digital data; this data is not restricted
in resolution by regulations (see Chapter 5.2.4.2). They are available at a significantly cheaper price
than satellites, due to the elimination of launch costs, minimization of development and manufacture
costs, and a lower cost regime of maintenance. Drones are readily accessible and upgradeable,
allowing them to be retrofitted with latest technology. A lack of processing power capable of handling
the high volume of data generated by drones might nevertheless be a short-term limiting factor in the
expansion of commercial markets and further exploitation.
4.3 Drone Development
Market forces will affect the development of remote sensing drones in climate studies, resource and
disaster management. The first aspect investigated is how internal and external market forces of the
drone industry play a role in the development. The latter comprises the development of imagers,
batteries, solar panels, flight dynamics, and manufacturing methods. The internal market forces
comprise the push and pull drivers, drone supply trends and life cycle costs. Finally, opportunities for
future investment are investigated.
4.3.1 Market Trends in Diffusion of Industry Innovation
4.3.1.1 Cameras
Drones and imagers are linked. The digital camera market is stagnant due to the surge of more
powerful cameras equipped in cell phones (Euromonitor International, 2014). A slowdown in the
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development of digital camera technology could adversely affect remote sensing drone development.
Alternatively, drone applications could drive developments in the digital camera market. The
beginning of this trend can be seen today: the sale of drones equipped with cameras is steadily
increasing (Majumdar, 2016).
The main drivers of drone camera technology are the real estate, media, entertainment, agricultural
and construction industries (Global Industry Analysts, Inc., 2016). However, the overall effect of
drones on the imager market is unknown.
While drones are not directly driving the imaging industry, they can benefit from cost reduction in
camera systems and continued technological advances in resolution and range (Transport Canada,
2016). The imaging industry is consumer driven –mainly by cell phones – in a market pull scenario
(Snow, 2016). This means that drone companies could see an increase in sales due to lower costs and
improved imaging capabilities.
4.3.1.2 Batteries
Imaging may be the primary function of an remote sensing drone but drone performance is the biggest
factor in producing quality images. Among performance drivers, batteries offer the highest potential
for performance improvement. Flight time is one of the most limiting factors of a drone in remote
sensing missions. Longer battery life and faster recharge times will therefore increase drone
productivity.
Overall, manufacturers are investing heavily in battery technology. Other battery market pulls stem
from climate change concerns, such as the continued pollution of the atmosphere. Green battery
development is driven by factors like a desired reduction in harmful heavy metals. Asia, in particular,
is growing swiftly in this sector, with China in the lead. The market for lithium batteries is growing
rapidly (Global Industry Analysts, Inc., 2016) as shown in Figure 4-4 below.
Figure 4-4: The Worldwide Battery Market, 1990-2015 (Pillot, 2015)
Other
Li-ion
NiMH
NiCD
000
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There is an increase in production and demand for batteries, which drives battery capacity. This will
help improve drones and is therefore a positive spin-in to the drone market.
4.3.1.3 Solar Panels
Solar panels act as an additional source of energy for long-duration drones to help increase flight time
and efficiency. The wholesale price of solar panels has decreased markedly over the last 8 years, from
$4.00/W in 2008 to $0.65/W in 2016. In the same year, US solar panel sales outpaced natural gas
installations for the first time in US history. Coal experienced heavy losses in 2015 due to concerns
over emissions (Weiser, 2016). Climate change policies and government subsidies continue to drive
the solar panel market, creating new jobs as depicted in Figure 4-5.
Figure 4-5: Solar, Coal and Oil Employment Rates (Solar Energy Industries Association, 2016)
Overall, this is good news for drones as more manufacturing will inevitably drive better performance,
thus better range and flight times.
4.3.1.4 Flight Dynamics
Flight dynamics is a spin-in technology for drones, which could benefit from improvements in areas
like geo-fencing. This would be useful in agriculture and resource management remote sensing.
The geo-fencing market is estimated to grow to $500 M by 2023 and the three major sectors driving
the industry are human resources, telematics and surprisingly, tracking lost children (Global Market
Insights, 2015). Thus, developments in flight dynamics may be “spun-in” to benefit the drone industry.
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4.3.1.5 Materials, Manufacture, and Control
Three emerging technologies should lead to significant gains in drone performance. They are 3D
imaging, 3D printing and the use of lightweight materials such as carbon fiber.
Carbon fiber and other lightweight materials – such as carbon nanotubes – have had significant impact
on the automotive industry. Drones could benefit from those materials too. The use of those materials
would increase strength and reduce mass, improving flight time and overall performance. “The Global
Automotive Lightweight Materials is poised to grow at a Combined Annual Growth Rate (CAGR) of
around 15.5% over the next decade to reach approximately $490 B by 2025” (Research and Markets,
2017). This is a positive trend for the drone market too, allowing increased performance and an
extension to the existing range of applications.
Secondly, 3D imaging is a development in remote sensing, enabling improvements in visualization
which can benefit disaster management in particular. Overall, this industry has seen an increase in
revenue from $332 to $407 M in 2015 alone (Allied Market Research, 2017).
Finally, 3D printing has helped to reduce manufacturing costs including those for drones. Leptron, a
company that manufactures remotely piloted helicopters for both military and civilian applications,
has utilized the Fused-Deposition Modeling (FDM) process. This process is a form of 3D printing
technology that creates end-use parts for their RDASS 4 drone. Compared to the traditional injection-
molding production, which costs $250,000 and requires 18 months of manufacture, FDM technology
completes the identical production in eight months’ time, at a cost of $103,000. Another advantage
of 3D printing is that design alterations are easier to integrate, as modification of hardware is not
required (Stratasys, 2015).
4.3.2 Commercial Drivers
In addition to looking at industries that may influence developments in the drone industry, commercial
drivers are also analyzed.
Dwindling demand for drones in the commercial sector, along with falling prices, has pushed
companies to divert from manufacturing to drone services. Recently, DJI lowered its prices, which
along with retailers’ additional discounting, led to market domination by the company. Companies like
3D Robotics have essentially been forced to shut down their manufacturing operations as DJI drone
prices fell by 70% over 9 months in 2016. This is taking a toll on all commercial drone companies as
venture capital investments in commercial drones also fell by 59% in the 3rd quarter of 2016. To their
credit, DJI has invested heavily in research and development to solve pressing technical issues and to
continually enhance their capabilities. The company employs thousands of scientists and engineers.
This has made them a world leader and a monopoly supplier in the consumer drone sales market
(Somerville, 2016).
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Figure 4-6: DJI Phantom 3 Drone (Dà-Jiāng Innovations Science and Technology Co., Ltd, 2017).
Regardless of the fall in venture capital investments in the third quarter of 2016, drone company deals
and overall funding have remained steady. Figure 4-7 analyzed by CB Insights as at November 2016,
shows the investment deals struck since 2012 which saw a thirty percent fall in 2016.
Figure 4-7: Drones Annual Global Financing History (CB Insights, 2016).
Drone market studies from the United States (RITA, 2013), Great Britain (European Union Committee,
2015) and France (Couillard & Scheller, 2015) all propose swift involvement by governments with
increases in spending and legislation to bring drones firmly into the realm of market acceptance. The
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recommendations are with respect to increased funding for drone companies which if implemented
would help foster a large emerging market.
Insurance, agriculture, construction and entertainment are target business markets that could benefit
from remote sensing technologies. Drone services are likely to benefit from new Federal Aviation
Administration (FAA) rules in USA that will simplify the process of licensing for commercial use.
Nevertheless, there are conflicting reports as to the size of the drone market moving forward. One
report by Price Waterhouse Cooper estimates the market will reach $127 billion by 2020, while
another by Grand View research puts that figure much lower at $4.7 billion by 2024 (Somerville, 2016).
4.3.3 Factors Limiting the Drone Market
The story of development in the drone market is one of technology driving capability and
performance, and the exploitation of new fields. This means a limiting factor in drone acceptance is
the availability of appropriate technology. Two commonly referenced and welcomed developments
are geo-fencing – the ability to virtually limit the displacement of a drone through radio or GPS signals
– and automated collision avoidance (BI Intelligence, 2016). Other issues such as flight times, payload
capacity, and communication platforms are also of interest. Having safe and increasingly controllable
and capable drones would greatly increase the market size for this technology.
The other factor in developing the potential for the widespread use of drones is regulation. Existing
legislation is deemed inadequate to actively support the development of the drone industry and is
found wanting in such areas as privacy, data protection and integration into international civil aviation
regulatory frameworks. A more detailed review of drone legislation and its limitations is presented in
Chapter 5. Suffice it to say that legal acceptance of drones has been a slow and laborious process in
many countries, as shown in Figure 2-1Figure 4-8.
Figure 4-8: FAA certification of drones in the United States, 2009-2013
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In analyzing the above figure, it is important to keep in mind that most of these permits are
educational or governmental; commercial ventures have had a hard time receiving legalization for the
use of drones. The importance of national acceptance to the growth of the drone market can not be
understated: companies from Kenya (Odido & Madara, 2013), Poland (PWC, 2016), and others see
proactive, forward-thinking drone legislation as a key driver towards future commercial success.
4.3.4 Drone Service Suppliers
Highlighted by the shift of 3D Robotics from drone manufacture into the service market, drone service
suppliers are poised to become important players in drone markets. The drone service market is on
track to become larger than the manufacturing market. The size of this market is still unknown but as
new laws are introduced market size is forecast to grow at a higher rate. This is highlighted by the
figure 4-9 which shows that majority of drone companies in North America and Europe are trading in
the service sector (Dillow, 2015).
Figure 4-9: Drone Service Providers Map in North America and Europe (Perlman, 2016).
Below is a sample of companies and the services they currently offer.
Blue Skies Drone Rental: provides drone rentals and sales (both new and used models), repair
services, drone pilots with FAA certifications, aerial services including surveying, mapping, 3D
modeling, industrial inspection, data processing, education and training, creative photos and videos,
and drone equipment such as sensors, and cameras (Blue Skies Drone Rental, 2017).
DroneBase: provides drone rentals and aerial photo services as well, while also finding pilots to
accomplish particular missions. They provide convenience for those who want aerial photos and
videos but cannot purchase a drone and hire a drone pilot.
The company focuses on services targeting real estate, construction and mining markets. They
typically charge $399 for 15-20 High Definition (HD) photos, 3-4 videos, and an edited final video, or
$499 for a < 50-acre survey with a high-resolution orthomosaic map. The company takes a commission
of approximately 15% (Connell, 2015).
Fly4Me: a new company that does not own any of its own drones. Instead, they connect drone pilots
with companies that want data, but do not want to own drones. For example, a solar company used
Fly4Me to get roof dimensions and shading data for where to put the solar panels. Fly4Me is one of
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many service companies that have benefitted from the FAA recently allowing companies to fly their
drones anywhere as long as it is below 61 m (Dillow, 2015).
Measure: one of a limited number of companies working with prospective clients to work out the
potential return on investment of using drones in their daily business. Through these non-technical
conversations, they link companies to long term service agreements (Dillow, 2015).
Some companies manage the complex and ambiguous legislation surrounding drones. This is
particularly useful for commercial operations near international borders.
4.3.5 Life Cycle/Maintenance Costs
Commercial drivers and the new drone service industry are not alone in influencing industry
development. Operational life cycle, particularly maintenance costs, are also key drivers. The service
industry is a promising market but at present it is too immature to provide historic and reliable life
cycle and maintenance costs. Desktop simulations and privately funded studies of operational drones
serve as useful analogues.
Boeing created a simulated case study of 50 drones flying in 5-hour circuits, twice a day each. The case
study simulated drones being used in the commercial service sector, and focused on the sensing,
computing and actuating elements of the drone system. The test drones could last for thirty years if
flown daily while components would need to be replaced annually. This resulted in total life cycle
costs, including R&D and production, of $5 M/drone, or about $45/hour (Malloy, 2003). A farmer
might pay $50,000 – $86,000 per year for satellite data over 20,000 ha of farmland (Vuolo, et al.,
2015). The drone life cycle costs presented are not yet based on reliable market data and drones
currently cannot cover same land area as a satellite.
The service market also requires operators and technicians. The Reaper military drone requires at
least 171 personnel to manage (Wheeler, 2012). The service industry is unlikely to engage same
number of personnel but staff costs will raise drone overall life cycle costs.
4.3.6 Future Opportunities and Recommendations
Infrastructure maintenance, insurance claims and agriculture are service areas that are ripe for
expansion. This is a market opportunity for new companies. Legal constraints are a barrier (The Nation,
2016); however, legal ambiguity provides further market opportunities where companies could
service and profit. Recent price reductions in commercial drones by DJI creates opportunities for
companies to enter and focus on the service market.
4.4 Market Segment Analysis
As an emergent technology, drones have the potential to present advantages to existing businesses
and applications. The analysis below considers the impact of remote sensing drones on resource
management, climate study, and disaster management. In each of these fields, the potential usage of
drones is justified and characterized. Particular attention is paid to areas where current remote
sensing satellites stand to benefit from the inclusion of drone-acquired data, as well as areas where
satellites may be phased out of the market. Further analysis portends to novel applications and
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markets that might be served by combining drone remote sensing technology with other technological
advances.
4.4.1 Resource Management
Drones are increasingly used for remote sensing activities in resource management. The market
potential of drone applications in precision agriculture and mining is assessed below.
4.4.1.1 Precision Agriculture
The precision agriculture industry is projected to grow to over $4.5 B by 2020. This is largely due to
the use of advanced remote sensing applications for agriculture. Due to their low cost, simplicity and
high resolutions across the EM spectrum, drones are expected to be a major constituent of these novel
applications (Markets and Markets, 2014).
Figure 4-10: Annual predicted commercial drone sales (Markets and Markets, 2014)
Thermal image resolution is a limitation to using satellites in agriculture. At present, Long-wavelength
Infrared (LIR) imagery from satellites is limited to low resolutions in the 30-90 m range (ASD Inc., 2016).
This makes LIR only useful in overview and trend monitoring applications at regional levels or on
exceptionally large farms. It is not useful in precision farming applications (USGS, 2014). Drones, on
the other hand, because of their higher resolution capability are the natural choice for application in
precision farming. High resolution imagery is a supplement to thermal images obtained by satellite,
the former having traditionally been obtained from light aircraft flights. Those images are increasingly
being taken by drones, due to their lower cost and a reduction in imager size (Workswell, 2017).
At present, drones are only suitable for imaging high-density crops, such as wheat, where simple
autonomous navigation systems are in use. As navigation technology develops (see Chapter 4.3.1),
drones will serve as a solution for close-proximity imaging where flying between olive or fruit trees
may be required. More advanced applications for drones will require the use of improved navigation
systems such as LiDAR, in addition to standard GPS systems (Shoshany, 2017).
Nu
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Drones could serve to open the remote sensing market to smaller farms who would not otherwise use
remote sensing data to improve crop yield. Figure 4-11 shows that, at a certain farm size, drones
become more cost-effective than satellite-based remote sensing – even when relatively expensive
data processing is included in the cost accounting. The use of drones is found to be particularly
advantageous to the developing countries, where farms tend to be smaller. In India, for example, the
average farm size is below 1 ha (IANS, 2015). Drone operating costs continue to fall in line with data
processing prices as the market for data processing and analysis becomes more competitive. As drone
use rises, economies of scale will continue to put further downward pressure on drone operating
costs.
Figure 4-11: Costs for satellite, aerial, and drone mapping imagery and analysis (DroneApps, 2016)
Precision farming as a whole has seen a significant increase in remote sensing in the last decade. Site
Specific Management (SSM) is a system that allows farmers to apply precise quantities of fertilizer,
pesticide, water, seeds, and other inputs to their land to optimize crop growth. SSM uses GPS tags on
remote sensing data as well as overlaid GIS information. SSM permits better allocation of water, seeds,
fertilizers, and pesticides saving money and reducing environmental stress in farms. For example, the
application of variable rates of Nitrogen, a fertilizer, is more profitable than applying a fixed-rate of
fertilizer. In 75% of cases, it reduces Nitrogen by 4.48 kg / Ha, and raise profits by up to $ 37 / Ha.
Studies on the variable application of herbicides and insecticides showed a reduction of 54 % of
chemicals used in fields of corn, barley, wheat, and sugar beets. This meant savings of $33/Ha by the
farmers. It is postulated that real-time sensing and in-row plant discrimination could reduce herbicide
use by 72% (Plant, 2001). Beyond economic advantages, reduction in Nitrogen and herbicides is in
keeping with global policies on environmental sustainability. SSM usage in USA is presented in Figure
4-12.
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Figure 4-12: Use of Precision Technology in Farming (Erickson & Widmar, 2015)
Drones have only recently become statistically significant in achieving precision agriculture. They are
projected to gain significant market share. The capacity of drones to produce higher resolution images
opens up many areas of analysis, for example, the provision of statistics on the growth patterns of
plant-specific species (DroneDeploy, 2015).
Recent developments in the satellites such as the emergence of large networks of small satellites could
reduce the cost of space-based remote sensing, thus giving satellite operators a real option to
compete with drones. Planet, for example, recently launched 88 microsatellites on one launcher.
Those satellites could provide daily imaging of the entire terrestrial landmass which, over time, could
make drones less commercially attractive where lower resolution images in the visible or NIR spectrum
were considered adequate.
4.4.1.2 Mining
Another major application for drones is in mining to estimate the volume of extracted deposits. The
technology can be applied to mineral exploration and mining management and operation. For
example, drone borne remote sensing technology could be used in repurposing and landscaping
redundant mines. Major mining companies, such as Rio Tinto, are investing heavily in this market
segment (Heber, 2015). One study showed that drones reduced costs associated with tracking mine
stockpiles by 22% when compared to traditional surveying methods. Drones also helped to provide
images of resource stockpiles at twice the frequency with four times less labor resource hours (Kespry,
2017).
The mining industry is showing preference for more autonomous drones, with reduced operator
specialization, to lower operational costs. The small size of drones coupled with additional safety
features – such as rear-located propellers – allows for the safe deployment of drones in a wide range
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of applications (Sensefly, 2017). The said benefits and advances highlight the technical merits of using
drones in mining and also explain the growing interest in drones, as summed up below.
“The investment for drones is growing. Australia’s mining industry alone spends
roughly $3.7 billion a year on research and development and the ability to operate
more efficiently in remote regions where drones aren’t likely to be threats to high-
density populations is a huge selling point for the technology.”
(Mining Global, 2014)
Evidence of high levels of R&D investment is a positive sign for the drone market. This interest is likely
to lead to further drone applications, such as real time mineral identification. Further developments
could also see larger drones equipped with ground penetrating radar to help with general mineral
extraction (Sensefly, 2017).
4.4.1.3 Recommendations
Drone use in resource management is growing as new techniques are proposed. Markets like
surveying and prospecting have been merging and new technology is integrating drone solutions. New
solutions are, therefore, likely to find limited competition and high levels of acceptance. Drones
currently offer advantage to other remote sensing platforms. Better drone solutions would lead to a
fall in demand for satellite remote sensing data in agriculture and mining.
4.4.2 Climate Study
Drones fit a particular niche in climate-study remote sensing applications. Conventional
meteorological monitoring methods comprise space-based (satellites), air-based (meteorological
aircraft), and ground-based (weather stations) systems. Of these, satellite monitoring is extensive but
costly. Meteorological aircraft require early approval from air traffic control, sacrificing flexibility.
Ground meteorological station data is accurate, but is not flexible. Meteorological drones are
eminently capable of making up for these shortcomings. Their low cost, flexibility and fast response
can increase the effectiveness of meteorological monitoring.
Beyond fitting into the Global Earth Observation System (GEOS) landscape, drones are uniquely suited
to several other applications too. The use of drones in weather forecasting and in climate research is
analyzed below.
4.4.2.1 Weather Forecasting
Drones are a new platform for weather forecasting, as highlighted in chapter 2.2.1. While satellites
are used to deliver global meteorological assessment, drones are capable of providing high accuracy
data on a local scale within a very short time span. The combination of the two sets of data helps to
produce more reliable predictions. While the potential impact of drones on weather forecasting is not
yet known, specialists are confident in the future of drones in meteorology. According to Jamey Jacob,
professor of mechanical and aerospace engineering at Oklahoma State University, “Use of unmanned
aircraft will eventually be a common tool in both meteorology and atmospheric physics but there is a
lot of research that needs to be accomplished first in technical, operational and regulatory areas for
that to happen” (Geiver, 2015). Jamey Jacob is the principal investigator of the research project –
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CLOUD MAP – that was awarded a $6 M grant to develop small, affordable drones for weather
forecasting. Researchers expect the technology will cost from $10,000 for basic drones to about
$100,000 for models with larger equipment and deployable sensors.
Many industries will be interested in the development of integrated systems. The weather forecasting
market is estimated at between $3 to $6 B and has grown consistently (see Figure 4-13) (Mukherjee,
2012) (Komissarov, 2016).
Figure 4-13: Commercial weather forecast market
Private players are beginning to enter the weather market in force as profitability margins increase as
demand rises. For example, in the United States, NASA, NOAA and the US Navy are the main
meteorological agencies, but the country now counts around four hundred private weather
forecasting companies. Some of them, such as Northwest WeatherNet, are specialized in Road
Weather Information Systems (RWIS), providing immediate, specific forecasts. Their main customers
– beyond the government – are aviation and construction companies. Over and above reliable data,
the private weather forecasters offer consultant services for decision making, a real distinction from
national weather forecasting institutions. These companies therefore distinguish themselves through
the following characteristics:
- forecasting accuracy
- acquisition frequency
- very specific localization
The development of drones is improving the quality and range of forecasting services. The Weather
Company (an IBM business) has announced collaboration with AirMap, a provider of drone services
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(Wong & Switzer, 2016). The aim of the partnership is to deliver real-time hyperlocal weather data,
providing an average of 20 M forecasts daily.
The transportation industry is a specific area where weather forecasting has a significant impact on
decision-making. In the United Kingdom (UK), the total budget for winter road maintenance was about
£140 M in 2001, of which more than £2 M was dedicated to road weather forecasts (Thornes &
Stephenson, 2001). A study of weather predictions in Finland showed that €226 M in yearly accident-
related costs were weather related. Improvements in weather forecasting could reduce that figure by
€3 M per annum. On a larger scale, the total weather-related road accidents in Europe amounted to
€20.7 B in 2013; perfect weather forecasting could bring about savings of €340 M per annum (Nurmi,
et al., 2013). As a value-added forecasting tool, drones can help close the gap between present (short
term) and future predictions.
Drones can be equipped with additional payload, beyond remote sensing cameras, to augment their
utility. One interesting example has drones equipped with a device release catalyst that could
artificially change the weather. In such applications, drones are cheaper than aircraft, traditionally
used in weather change missions. Drones have proved to be more accurate and able to meet technical
specifications more precisely. Such can be of benefit by assisting in putting out fires or easing droughts
(Guo & Tong, 2016).
4.4.2.2 Climate Research
Drones have been used in climate studies for more than 10 years. Concentrated in the field of research
and exploration, they are so far being overlooked by large-scale meteorological services. Currently,
governmental meteorological bureaus, research institutions, university laboratories and commercial
companies are spending money on drones. Most public funding on drone-based climate studies
originates from the USA and Australia (Guo & Tong, 2016).
Drones can be used to acquire straight-from-the-source data on hurricanes, answering key questions
on hurricane behavior. They will also help scientists improve their understanding of the characteristics
and behavior of volcano plumes, serving to inform policymakers on how best to deal with eruptions
while mitigating environmental hazards like smog for those who live near volcanoes. Regular
measurements by in-situ drones could also help predict eruptions (Berger, 2013). One particular
example of a perfect drone application is the measurement of the rate at which glaciers in the
Peruvian Andes are shrinking. Data collection takes minutes by a drone, as opposed to months by
traditional means. The ability to obtain quicker, more accurate data is changing the way climate
scientists are able to create models and forecasts (O’Sullivan, 2016).
The value of improving research into terrestrial phenomena is hard to determine accurately, yet
remains of particular importance. For example, improved knowledge of volcano activity could have
greatly limited the impact of the 2010 Eyjafjallajökull eruption in Iceland, which affected industries
from European air travel to Kenyan agriculture (BBC, 2010).
4.4.2.3 Recommendations
As highlighted above, drones are a unique platform able to provide new information to GEOS. While
the exact economic impact of improved weather forecasting is not known, specialized studies have
shown that, for example, €340 M could be saved annually in Europe from weather-related road
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accidents alone. Drones should therefore be integrated into GEOS as well as private weather
monitoring services. Furthermore, their use as a research tool is has been shown to be invaluable.
4.4.3 Disaster Management
The United Nations Office for Disaster Risk Reduction (UNISDR) reports that from 2000-2012, natural
disasters cost trillions of dollars in redevelopment projects and affected billions of people worldwide.
There has been increasing pressure on improving disaster relief strategies. As a result, technologies
aiding disaster relief have seen great breakthroughs since that time (Reich, 2016).
The overall dollar impact of natural disasters has also been studied by the Munich Reinsurance
Company (see Figure 4-14). Insured and uninsured losses are generally rising. This trend has seen
losses rise from $50 billion in 1980 to $150 billion in 2010.
Figure 4-14: Economic impact of worldwide natural disasters (Munich RE, 2013)
In managing a disaster, both in terms of Search and Rescue (S&R) and ascertaining damages, the first
6-12 hours are considered critical (Abolghasemi, et al., 2006) (Olson & Olson, 1987). For this reason,
drones are gaining popularity as a remote sensing tool for managing disasters. The use of drones in
assisting first responders in natural disasters, and in providing footage for insurance claims, are
presented below.
4.4.3.1 Natural Disaster Assistance
The American Red Cross commissioned a study in 2015, examining the benefits of using drones in
disaster management, and concluded that this technology was indeed the future of emergency
response in humanitarian and safety efforts (MEASURE, 2015). Drones started to play a role in
emergency response in 2005, and since 2011 they have been involved in nearly every single significant
major disaster relief effort (Underwood, 2015).
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In effect, drones present several advantages when compared with traditional remote sensing options,
such as:
- rapid emergency response capability
- ability to access data regardless of meteorological conditions
- elimination of risk posed to human operators of remote sensing aircraft
- reduction of image acquisition costs
(Tianjie, et al., 2011)
A tangible example of those benefits is in the immediate aftermath of the Nepal earthquake in April
2015. Cloudy conditions obscured the view captured in most satellite images. In fact, Nepal's
meteorological conditions were detrimental to high-definition satellite imagery for several days after
the earthquake. Nevertheless, drones succeeded in capturing detailed images of damage in the area
of Kathmandu (Bloch, 2016).
By providing rapid, detailed images, drones are the perfect solution to assist in S&R operations. The
cost of a single urban S&R team in USA is around $ 200 000 for a typical 3-day mission (Bea, 2010). By
providing rapid imagery guiding rescue efforts, overall costs can be greatly reduced.
Furthermore, as a low-cost remote sensing option, drones can be owned by members of the public –
unlike satellites. This could lead to disaster-affected communities launching private drones
immediately in response to a crisis, assisting in detection and recovery.
Finally, drones present particular technological advantages that are ideally suited for search and
rescue teams. For example, a remote sensing drone can be equipped with a cellphone broadcast
beacon, helping to pinpoint the location of incapacitated people while quickly establishing a basic
communication infrastructure. Additionally, drones can be used to deliver medical and food supplies
to isolated disaster survivors (Weatmore, 2016). Effectively, drones are more suitable than satellites
in disaster management. As flight times and range increase, the superiority gap of drones over
satellites stands to grow wider.
4.4.3.2 Insurance Claims and Risk Assessment
Insurance companies are proving to be one of the largest emerging customers for asset management
remote sensing applications, using this data to help validate claims. For quick response, insurance
companies are turning to commercial drone operators after disasters to inspect the damaged area.
Beyond quicker response, drones also provide high resolution data, useful to insurers for loss
adjusting, at a lower cost than satellites.
A famous example of drone usage in an insurance case was the Tianjin, China, port explosions in
August 2015. The Munich Reinsurance Company cross-referenced drone data collected after the
explosions with satellite data prior to the incident to validate claims of asset damage. As the
government, would not allow people access to the explosion site, drones were the simplest method
of assessing loss. According to expert estimates, the resultant property loss was very significant with
compensation expected to reach 50 billion to 100 billion yuan.
To process claims quickly, insurance agencies can use drones to check damaged buildings and
property. This technology enables insurance carriers such as Allstate to inspect roofs without
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employing ladder teams. This has helped the company to handle customer insurance claims more
quickly and reduce overhead costs. With FAA new ruling on how businesses should operate drones,
Allstate plans to expand its drone test according to Glenn Shapiro, the company’s executive vice
president of claims (Vanian, 2016).
4.4.3.3 Recommendations
To ensure the most effective use of drone technology in disaster relief and assessment, organizations
and governments should have active drone deployment models. The use of drones for disaster
management saves money. It also reduces human and material loss by providing faster information
to recovery teams.
With the capability to greatly enhance disaster relief capability, it is suggested that public, private and
non-profit organizations become expert users of drone services and create the necessary legal and
regulatory framework to accommodate current and future deployment models.
4.5 Conclusion
Technical capabilities of drones were established earlier, in chapter 2, and it was concluded that they
were best used to cooperate, complete, or replace satellite functionality in climate studies, resource
management and disaster management respectively. Whilst drones are capable of accomplishing
remote sensing missions in several fields, satellites remain a better platform for remote sensing.
Despite this, drones are beneficial when deployed in conjunction with existing remote sensing systems
and, furthermore, because of low cost they could provide a flexible solution to niche market problems
such as local weather forecasting or search/rescue missions. This gives drones the potential to become
a disruptive technology in remote sensing.
This chapter examined the commercial justification to use drones in remote sensing. The remote
sensing market was analyzed and commercial benefits for remote sensing activities were identified
and reviewed. Overall market demand was studied to determine if pursuing future remote sensing
endeavors would be a worthwhile undertaking. Specific factors influencing market growth were
analyzed which highlighted the technical, commercial and legal trends that would impact on the next
generation of remote sensing equipment. In analyzing the current status of the remote sensing
market, the fitness for purpose of drones for that market was clearly established. Drone technology
matches major market trends and characteristics. Drones are poised to be an important remote
sensing tool in the coming years.
Having established drones as a viable market option, the development of drones was reviewed.
Markets with an important impact on the future of drone systems, such as those of cameras, batteries,
additive manufacturing and others, were reviewed. Technology trends in those markets will impact
on drones, just as drone development would act as a driving force for the development of those
markets too. In fact, drones seem to be a major future user of camera technology, ensuring continued
development of digital cameras.
After the study of ‘push’ and ‘pull’ forces and market drivers, the drone market itself was analyzed.
Commercial drone manufacturing is becoming monopolistic, with DJI supplying cheaper and better
drones. The drone service industry therefore seems to be the best area for future integration. The size
4 – Remote Sensing Market
Conclusion
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of the service market is still unknown and there are varying predictions that it could reach between
$4.7 billion – $127 billion. Given the large increase in the funding over the past two years, it is
predicted that the market will grow closer to the higher end of those predictions. The scope of growth
still remains unknown as drone companies are surprised by the rate of business expansion they
experience.
The uptake and expansion in drone services has already taken place in North America and Europe.
There are now more companies trading in the drone services market than any other segment of the
drone industry. Although this market will continue to grow, the threat it poses to remote sensing
satellites seems limited to the area of disaster management and Precision Agriculture potentially.
Satellites are still important to climate studies and provide value in resource management but in
disaster management drones are likely to be the main tool.
A review of drone lifecycle costs justified the initial capital outlay showing there were overall benefits
to operating drones. It is still too early to gain precise information about drone lifecycle costs as the
service market is new and data is limited. In the commercial sector, however, it will nonetheless be
significantly cheaper to operate a drone than rely on satellite-based remote sensing even when
specialist labor costs are taken into account.
Finally, the potential of drone technology was studied in three particular markets: resource
management, including agriculture and mining; climate study; and disaster management, including
natural disasters and insurance claims. In those markets, drones were compared to current remote
sensing solutions, analyzing the technical, financial, and trickle-down advantages to be gleaned from
integrating drones into current remote sensing systems. In concluding each market, drone
characteristics were highlighted, demonstrating their benefits, not available to current remote sensing
technology.
Dragonfly recommends that drone service companies continue to enter the agriculture and mining
markets to fill existing gaps in those markets. Also, drones should be employed into the GEOS system
and be deployed more often in disaster management as they provide superior capabilities to those by
satellites.
It was argued that changes to regulation would further facilitate commercialization and market
growth. To address those issues, Chapter 5 discusses legal hurdles facing the drone industry. The
legislation in ten countries around the world is presented, and strengths and shortfalls in current
national and international regulations are analyzed.
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Introduction
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5 Legal Frameworks for Drone Operations
5.1 Introduction
In the previous chapter the rapid development of drone technology and drone markets were research
and the results were presented. It was noted that the drone market was growing rapidly and that the
market was polarized into a mass market monopoly supplier at one end and a proliferation of service
companies at the other. It was shown there was inadequate legislation in some parts of the world and
where there was legislation it was either too vague or potentially hindered further market growth.
We have seen how drones can potentially impact on our lives and how fast they are being integrated
into many remote sensing applications. Drone operations may, however, pose serious threat to our
privacy and security. They can cause damage to persons and property. It is therefore considered
essential to create well-defined legal frameworks for drone operations. The increase in the usage of
private and commercial drones poses a challenge for governments as they attempt to structure
legislation, with a focus on safety to persons and property.
This chapter reviews the legislation and regulatory frameworks that were set up in some model
countries as of January 2017. It is important to note that all legislations mentioned here aim to cover
drones involved in remote sensing. It will not delve into remote sensing specific legislations already in
place for satellites. Gaps in legislation are identified and discussed, followed by a presentation of the
ethical issues that need to be addressed with respect to drone operations. These include drone
failures, safety considerations, security risks, and privacy issues, followed by risk mitigation
approaches. Recommendations are presented for drone operations to create a harmonized licensing
and reporting system to engender international cooperation. The chapter closes with a discussion on
policy development and enforcement arrangements for remote sensing activities.
5.2 Legislation and Regulatory Frameworks
The International Civil Aviation Organization (ICAO) is working to integrate drones into the
international aviation legal system. A circular issued in 2011 was the first step to produce “the
fundamental international regulatory framework through Standards and Recommended Practices
(SARPs), with supporting Procedures for Air Navigation Service (PANS) and guidance material, to
underpin routine operation of Unmanned Aircraft Systems (UAS) throughout the world in a safe,
harmonized and seamless manner comparable to that of manned operations” (Aviation, International
Civil, 2011).
Most countries have common considerations in terms of the scope of regulation, jurisdiction, drone
registration and labelling, weight, altitude, flight authorization information, operator qualifications,
and privacy.
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5.2.1 Private and Commercial Drone Legislations and Regulations in
Different Countries
In recent years, many countries have put forth national regulatory frameworks which vary in many
ways including: drone definition, drone use, requirements for licensing and other legal definitions.
Legal frameworks often make a distinction between recreational and commercial use. Recreational
usage is defined as using drones for personal interest and enjoyment, such as taking photos for
personal use. On the other hand, taking photos for compensation or sale is identified as commercial
use. Commercial use is constituted by selling photos, using drones to provide services, real estate and
wedding photography, professional cinematography, and services for mapping and land surveying.
The following presents a summary of drone legislation in Australia, Canada, China, France, Germany,
India, Japan, Russia, UK, and USA. These countries were selected because their drone legislations were
either well-established or unique compared to other countries not mentioned here.
5.2.1.1 Drone Legislation in Australia
Australia was the first country to established drone regulations. Australian Civil Aviation Safety
Authority (CASA) is the organization in charge of drone regulation in Australia. Regulation of drones
began in 2002 and has recently (2016) been modified to include rules for non-recreational drones.
Australia regulates drone operations according to weight and type of use. Some of CASA (2016)
regulations are described in Table 5-2. Pilots require a license to operate, must complete training,
have a minimum number of flying hours and have procedures for flight safety. Pilots flying a heavy
drone are required to obtain an airworthiness certificate for their aircraft.
5.2.1.2 Drone Legislation in Canada
In Canada, drones are regulated by Canadian Aviation Regulation (CAR) and the Aeronautics Act which
follow rules and guidelines issued by the country’s department of transport (Transport Canada).
Applicability of drone regulation depends on the use (recreational vs commercial) and the weight of
the drone. Flying or operating a drone in Canada requires following the rules of CAR. Also, a Special
Flight Operations Certificate (SFOC) is required. Drone operations fall under several rules, including
Model Aircraft CAR section 602.45, the Criminal Code, Trespass Act, as well as all applicable municipal,
provincial, and territorial laws (Government of Canada, 2017).
Local policy could apply in the case of breaking the law during drone operations. Furthermore,
Transport Canada inspectors investigate and report unsafe or illegal usage of drones. Thus, a drone
pilot could face charges if a manned aircraft is put at risk or if the safety of the public has been
jeopardized, which could result in imprisonment or a fine of 25,000 Canadian dollars.
Table 5-2 summarizes requirements for both recreational and non-recreational drone operations
which could be found on the website of Transport Canada (2014 and 2016).
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5.2.1.3 Drone Legislation in China
The People’s Republic of China (PRC) has a Civil Aviation Law, General Flight Rules, and the Regulations
on General Aviation Flight Control. Civil aviation and flight activities are regulated by these, but PRC
does not apply the rules to drones. As the Civil Aviation Administration of China (CAAC) establishes
regulations on civil aviation (The National People's Congress of the PRC, 2015), it has issued guidelines
(advisory) for drones (CAAC, 2015).
In 2015, CAAC established provisions concerning drone operations. They created a dynamic database
system (Drone Cloud) to monitor drone operations. This system sends alarms to operators when they
are flying in close proximity to restricted zones.
Users that are not connected to Drone Cloud must consult the authorities before flying. Two operating
regimes are stipulated; flying with a Visual Line of Sight (VLOS) and Beyond Visual Line of Sight (BVLOS).
Flying with VLOS must be during daytime. Regulations for drones between 1.5 kg and 150 kg limit the
speed to 100 km/h (CAAC, 2015). Refer to Table 5-1 for further details on operating regulations. Drone
operations require a designated pilot who will be held liable for all incidents. (CAAC, Flight Standards
Dept Civil Aviation Administratio, 2013).
According to “Drone Interim Operation Provisions” drones are divided into seven categories (see Table
5-1). Drones weighing less than 1.5 kg are not regulated but must operate in a safe manner to avoid
injuries to third parties.
Table 5-1: Drone categories in China
Weight (kg) Take off gross weight (kg) Category
0 < W ≤ 1.5 0 < W ≤ 1.5 I
1.5 < W ≤ 4 1.5 < W ≤ 7 II
4 < W ≤ 15 7 < W ≤ 25 III
15 < W ≤ 116 25 < W ≤ 150 IV
Plant protection Drone Plant protection Drone V
Unmanned airships Unmanned airships VI
Category I and II UAS that can operate 100 meters beyond
visual line of sight
Category I and II UAS that can operate 100 meters beyond
visual line of sight VII
5.2.1.4 Drone Legislation in France
Recent regulations have been implemented in France by the Minister for Ecology, Sustainable
Development and Energy and the Minister of Overseas. Drone flight altitude is limited and flights are
forbidden over predefined zones, e.g. military buildings, airports, monuments, nuclear plants, etc.
Flying over public and private sites requires permission by the government and the landowner
respectively. Drones used for recreation are subject to restrictions depending on their weight. In
addition, drone speed must be managed to minimize collision risk and loss of control. Furthermore,
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drone flight altitude may be limited to 50 m above ground in some cases. The violation of the
established rules (see Table 5-2) is punishable by heavy fines and imprisonment.
The civil use of drones falls into one of the following categories: hobby and competition, experimental
and testing purposes, and “particular activities” (everything else) (Legifrance, 2015). Refer to Table
5-2 for details on operational regulations. For the ‘hobby and competition’ category, drones are
subject to weight and flight performance capacity within two sub-categories, A and B. Distance
restrictions are in place for the ‘experimental and testing purposes’ category where the farthest
distance from the pilot will be 200 m, keeping 50 m of distance from people. The ‘particular activities’
category includes commercial purposes, and is regulated based on four different flight scenarios.
(Legifrance, 2015). Different rules apply to these four scenarios, generally requiring authorization for
flight and limit the maximum line of sight and flight over populated areas.
5.2.1.5 Drone Legislation in Germany
German Air Traffic Act defines drones as unmanned aerial vehicles. Drones are not used for hobby or
recreational purposes and Table 5-2 summarizes requirements for drone usage under three weight
categories (LuftVO, 2015).
5.2.1.6 Drone Legislation in India
Until recently drone regulations were absent in India. However, legislation is now underway. A draft
circular from the Air Transport (ODGCA, 2016), defines drones as consisting of an unmanned aircraft,
a remote pilot and a command and control link. This definition is important and paves the way for
regulation and restriction on drone operations. Civilian use of drones is allowed and includes activities
such monitoring, disaster management, surveys, commercial photography and mapping. For all drone
operations in India, a Unique Identification Number (UIN) is required and is issued by the country’s
Director General of Civil Aviation (DGCA). Upon receipt of the UIN, an identification plate inscribed
with the UIN shall be fixed to the drone. Only citizens of India, or companies registered in India can
acquire a UIN. Ownership, of the drone is registered and can only be transferred via DGCA.
Insurance is mandatory for liability in case of damages to a third party, and the operator is responsible
for notifying the Director of Air Safety, the DGCA, and The Bureau of Civil Aviation Security of any
incident or accident within 24 hours.
All flights above 61 m altitude require a permit, also issued on a case by case basis by the DGCA. Drones
must be operated during daylight with good visual meteorological conditions, with ground visibility
over 5 km and wind speed less than 37 km/h.
Pilots of drones heavier than 2 kg, must be at least 18 years of age. The pilots undertake practical
training and must demonstrate satisfactory control of a drone throughout its operation. Dropping or
discharging substances are prohibited unless specifically cleared in the operation permit (ODGCA,
2016).
5.2.1.7 Drone Legislation in Japan
In April 2015 Japan made amendments to its Aviation Act to included drone regulation. Drones cannot
carry dangerous objects, such as flammable materials and must avoid dropping anything (MLIT, 2015).
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5.2.1.8 Drone Legislation in Russia
In Russia, the first draft law concerning drone operation was introduced in 2015. This law is an
amendment to Russia’s Air Code and came into force in March 2016. Standards on certification and
drone registration have been introduced by this amendment (Russian Government, 2015).
The drone laws state that each flight must have a crew comprising a pilot and an observer, both
present throughout the flight and responsible for the flight. The crew must have a flight plan similar
to a conventional aircraft. The flight plan information should include: drone model, purpose of flight,
time and estimated area/zone of flight. Drones must be operated during daytime and documentation
must be on board (Russian Government, 2015).
5.2.1.9 Drone Legislation in the United Kingdom (UK)
In the UK, drones fall under the Aviation Law and are regulated by the Civil Aviation Authority (CAA).
One of the main goals is to keep people safe. Drone specific laws are contained in two legal statutes:
The Civil Aviation Act 1982 and the Air Navigation Order (2009). Both are enforced by CAA and a
violation of those laws may lead to criminal charges. Some additional rules regarding airspace over
the UK may also apply during flight. Regulations require that drones follow the same safety standards
as those for manned aircraft, to ensure the safety of people and property (CAA, 2015). Foreign aircraft
with aerial photography intentions are forbidden from flying over the UK soil without permission from
Secretary of State (CAA, 2009). Depending on their weight, drones are subject to several restrictions
(CAA, 2009).
5.2.1.10 Drone Legislation in the United States (US)
The FAA, Office of the Secretary of Transportation (OST), and Department of Transportation (DOT) are
the agencies in charge of applying the operations and certifications of drone systems in the United
States. Since 2008, the FAA has been working and modifying its regulations to incorporate drones into
the National Airspace System (NAS). Modifications take into consideration drone operations and
certification of pilots. The established regulations (Table 5-2) fulfill some requirements for operating
drones for recreational or commercial purposes.
The FAA defines a drone as small aircraft weighing less than 25 kg that can perform flight in a safe and
efficient manner. Three mechanisms for non-recreational drone regulation were established. These
include exemptions, special certification (airworthiness) and authorization (FAA, 2016).
The rules limit drone flights to daytime with a VLOS at a maximum ground speed of 100 mph (about
161 km/h). Furthermore, it is prohibited for drones to fly carrying hazardous materials (FAA, 2016).
Maps with flight-restricted areas is made public by the FAA. For this purpose, the FAA also offers a
smartphone application (B4UFLY APP) available online. This application can help users in avoiding
restricted areas. Special clearance from the FAA is required for commercial drone operations.
5.2.2 Comparison of Legal Frameworks
In general, the legal frameworks in most of the countries are looking to protect property, the safety
of people on the ground, and securing the safety of other airspace users. However, the treatment of
issues such as insurance, privacy, licensing, and other flight restrictions varies greatly between
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countries. Some countries, like France, have put in place detailed regulations that address those issues
in a balanced manner, whilst others have chosen to ignore privacy or insurance in their national laws.
A brief review of drone regulations in ten countries showed that drones were referred to as,
Unmanned Aircraft System (UAS), Remotely Piloted Aircraft (RPA), and Unmanned Aerial Vehicles
(UAVs) among others. ICAO has adopted UAS as its preferred term for all types of unmanned systems,
whereas the term used in this report is ‘drone’.
Table 5-2, below, presents a summary of the operational requirements for drones in the countries
discussed in section 5.2.1. In the majority of these countries, permission must be granted from a
national or local authority in the form of an approval via drone registration. Pilot certification may also
be required by drone operators in some countries to enhance safety. Insurance is available and
required by several countries for drone operations. In those cases, insurance must be acquired to
cover third party damages.
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Table 5-2: Comparison of drone regulations by country
USA
UK
Ru
ssia
Japan
Ind
ia
Germ
any
France
Ch
ina
Can
ada
Au
stralia
Co
un
try
< 25
< 20
20
- 15
0
> 0.2
5
< 0.2
> 0.2
< 20
< 5
25
-May
> 25
< 25
> 25
< 25
< 15
0
< 1.5
1.5
- 15
0
< 35
> 3
5
< 2
25
-Feb
25
- 15
0
Weigh
t (kg)
(No
n) R
ecreatio
nal
- - - - - -
No
n-recreatio
nal u
se o
nly
Ho
bb
y Catego
ry A
Ho
bb
y Catego
ry B
Experim
ent an
d Te
sts
Particu
lar Activities
- -
Recreatio
nal
No
n-R
ecreation
al
- - -
Type o
f Use
12
0
15
0
-
30
30
< 61
-
30
-
15
0
150
- -
12
0
Altitu
de
(m
)
-
- - -
Fly C
ertificat
e
- - -
- - -
-
Are
a R
estrictio
n
- -
- -
- - - -
-
-
VLO
S
- - -
- - - -
- - -
Privacy
- - -
- - - - - - -
- - -
Insu
rance
-
Pe
rmissio
n
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Privacy with respect to data protection is also addressed in some countries. Germany, for example,
puts an emphasis on data protection rules. France and Japan, on the other hand, do not address this
issue at all and in the UK there are special restrictions on recording images from a drone which could
infringe some national laws.
With respect to maintaining visual contact with a drone, some countries require a VLOS restriction
according to the weight of the drone. China requires that drone operators are within VLOS or BVLOS
under certain emergency conditions.
Regarding area restrictions, several countries limit drone flights above crowded areas or public events.
Most countries have placed restrictions on flying over certain areas, such as airports, prisons, military
installations, nuclear plants, parks, and historical monuments. Other drone flight restrictions include
maximum drone flight altitude, and the total weight limitations (including payload).
5.2.3 Data Accessibility and Distribution
The use of drones allows for the expansion and facilitation of applications, depending on payload
capabilities. From those applications, informative data could be disseminated to experts, researchers,
companies, and public sector organizations. In respect of privacy, human rights and ownership of data,
it becomes imperative to regulate data protection and restrict access and data distribution. In the case
of remote sensing where the drone has surveillance capabilities, much legislation on data protection
and privacy applies. This section provides an overview of how data is protected in some countries
where relevant legislation has already been put in place.
5.2.3.1 European Union
To bring about and maintain social acceptance, privacy and data protection are considered essential.
With respect to EO data, costly programs are in place to provide protection. The EU currently does not
have legislation in place that covers remote sensing data. It does, however, protect data by the use of
copyright laws. Aside from the fact that copyright laws may vary between ESA Member States, and
those laws may be inadequate for protecting raw data, the EU has enhanced legislation to include a
sui generis right. The sui generis protection right allows legislators to borrow principles from analogous
regulations in order to protect remote sensing data, which may not be protected by copyright
(European Space Agency, 2012). Currently this protection applies to satellite remote sensing data, and
will need to be adopted officially for drone borne remote sensing data.
The European Data Protection Supervisor (EDPS) has made recommendations to enhance privacy and
data protection in the EU. One such recommendation suggests that EU should make an effort to
ensure that manufacturers, controllers, processors, users and the public are aware of current data
protection legislation. Manufacturers should also try to implement privacy protection in the design of
their drones and payloads. Although there are gaps in EU data protection, inappropriate data
infringement can lead to severe consequences under criminal law, intellectual property, aviation and
environmental laws (Marzocchi, 2015).
5.2.3.2 Germany
In Germany, the Federal Data Protection Act (FDPA) applies when personal data is involved in a
transaction. This Act defines personal data as “any information concerning the personal or material
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circumstances of an identified or identifiable individual.” (juris GmbH, 2003). When video surveillance
of nonpublic places is conducted by drones, requirements of the FDPA must be strictly followed. This
includes, ensuring that consent has been given by the party under surveillance. FDPA does not apply
in situations where personal data is used for personal activities, or if a drone is used for recreational
purposes (Gesley, 2016).
Further to FDPA, the Right to Control the Use of One’s Image as part of the Copyright Arts Domain Act
(CADA) ensures that prior consent must be attained by all individuals in an image or video taken by a
drone, before those products can be used and shared. Individuals must be made aware of the data
collector, the purpose for the collection use of the data, and those who will be the recipients of the
data (Gesley, 2016). Until all this information has been made public to those involved all other acts in
relation to the data would be considered an infringement on the FDPA and the CADA.
Two additional legislations are in place for data protection and privacy rights. These are the General
Right of Personality, and the Copyright Law. The former ensures that personal, private space and
property are protected (i.e. by prohibiting the repeated drone intrusion of property), while the latter
deals with architecture surveillance. Images taken by a drone of a public infrastructure is allowed for
private use only, as long as the view is readily visible from the street (Gesley, 2016). Germany can be
regarded as a nation with relatively well-established data protection and privacy rights policies.
5.2.3.3 United Kingdom
The Information Commissioner’s Office (ICO )in the United Kingdom enforced the Data Protection Act
(DPA) in 1998. Drones carrying a surveillance- payload may be covered under DPA, where specific
requirements must be met by professional or commercial drone operators, to ensure the rightful use
of data in accordance with privacy and data protection. The DPA also provides liability rights allowing
claims to be made when incidents related to data infringement occur (ICO, 2015).
In the United Kingdom, other data protection or related legislations include the Freedom of
Information Act (FOIA), the Protection of Freedoms Act (POFA), the Human Rights Act (HRA) and the
Surveillance Camera Code of Practice (ICO, 2015). These acts, however, neither consider nor include
drone operations. These would be added to address specific needs associated with drone applications.
To enhance data protection and privacy rights, ICO recommends several actions to drone
manufacturers and operators. Posting detailed notices about how privacy would be handled on open-
access channels would raise drone use transparency. Another suggestion is that operators should
ensure the recording system on the drone could voluntarily be made active, or inactive, to increase
privacy control. Data should be securely stored (i.e. encrypted or with restricted access), retained for
a specified time period, and then destroyed when it is no longer used (ICO, 2015).
5.2.3.4 United States
Despite having established regulations for the technical, mechanical, educational, and restricted
application of drones, USA lags on dedicated data protection legislation on drones. In the United
States, data protection is regulated at industry level, to which the privacy requirements apply (Sotto
& Simpson, 2015). The drone industry, therefore, needs to adopt its own data protection policies for
remote sensing applications. Lawsuits are still possible against drone operators; however, laws for
privacy and data protection exist at federal and state levels. These could apply in defense of a victim.
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5.2.3.5 Summary
Many countries may have legislation in place to deal with data accessibility and distribution. This is to
ensure privacy rights are protected in circumstances involving remote sensing drone missions. The
laws for the four countries presented in this section were discussed because their drone legislation
either adequately covered data protection and privacy, or to the contrary, there was a gap in their
laws despite advancements in drone technology and a rise in demand for remote sensing in that
country. An evident contrast that underlies the importance of establishing well defined legislation
pertaining to drone borne data collection and surveillance.
5.2.4 Gaps and Issues
5.2.4.1 Lack of an Established International Legal Infrastructure for Drones
As the drone market grows around the world, governments are trying to incorporate them into their
respective civil aviation systems through regulation. Reaching an international consensus is required,
standards and policies in support of a safe, manageable, and sustainable operation over time are
necessary. Establishing appropriate regulatory frameworks and oversight processes is crucial.
Without a necessary international regulatory infrastructure, drone proliferation poses a threat to civil
liberties and international law. International regulation would allow drones to operate safely and
reliably around the world. A system of international pilot certification should be created and
agreements should include ethical interests. ICAO is currently working to provide an international
regulatory framework for unmanned aviation to perform routine drone operations around the world
in a coordinated and safe manner.
Civil commercial markets cannot develop properly without an international consensus. Currently
there are no international airworthiness norms for drones. Considering the unethical use of drones
for air strikes, public ethical debates about drone use have to be encouraged, and should influence
drone regulations. The military use of drones is not regulated worldwide and some countries use
drones for domestic security, border control and coastal surveillance. Drones may easily cross borders
but a lack of international legal framework for drones prevents countries from addressing this issue.
Telecommunication is indispensable for drone operation. Radio telecommunication is strictly
regulated by the International Telecommunication Union (ITU). This organization oversees ensuring
the allocation of global radio spectrum and improving access to communities worldwide. Coordinating
efforts between industry and legislators are required to establish an international legislation and a
radio frequencies allocation for drone operations. Drones require two fundamental types of links to
operate (command-control and payload. The ITU must define a frequency band for drones soon. As
drones become more popular, the need for allocated frequencies becomes more urgent to avoid radio
interference.
5.2.4.2 Remote Sensing Activities
Remote sensing activities by drones has not yet been integrated into the legal system. For that reason,
there are also no current regulations on the spatial resolution of remote sensing drones. Most existing
regulations refer to the fly zones restrictions. However, a detailed and comprehensive regulation has
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not yet been established for using drones to conduct remote sensing activities. Nevertheless, some
aspects of a legal framework for drones exist in some countries.
In China, “approval and administrative regulation on the General Aviation Aircraft mission” was
established in 2013 (Civil Aviation Administration of China, 2013). This regulation stipulates that a
mission plan will be submitted before the flight. Only then can commercial applications, such as land
survey, terrain observation, agriculture, etc. commence. In case of flight over military areas and other
important zones, other government departments must be involved in the approval. Other laws that
affect remote sensing include “Surveying and Mapping Law of the People’s Republic of China”, a law
that regulates the use of the surveying and mapping data.
In the USA, the use of drones for remote sensing is limited by the Federal Data Protection Act, the
Privacy Act and the Electronic Communications Privacy Act, as well as FAA Reauthorization Act.
However, it has been suggested that a comprehensive legislation should be outlined to clarify the rules
of using data gathered through remote sensing (Vacek, 2014).
5.2.4.3 Manufacturing Legislation
The Congressional Research Service predicts that the total manufacturing profit of drones would
increase from $4 B assessed in 2015, to an estimated $14 B in 2025 (Forshaw, 2016).
The rapid development of drones and the lag in legislation led to ambiguity in regulations regarding
manufacture, classification and usage of drones. Presently, most countries lack specific laws for the
manufacturing of drones. However, many countries have put forth general regulations that classify
drones with respect to their weight and function. The Aviation Rulemaking Committee (ARC), is
comprised of industry and aviation stakeholders, and advises the FAA of the USA. In 2016, the ARC put
forth a proposed legal framework regarding the drone manufacturers. ARC suggested special
standards for quality control of drones, depending on category. A ‘Specified impact energy threshold’
was proposed, and the manufacturing companies are required to design a test to check the impact
energy. In addition, ‘Exposed rotating parts’, must meet safety standards (ARC, 2016).
The legislator must take into consideration that drones comprise both embedded software and
hardware. Appropriate regulations should be established to define mandatory clauses to check safety
aspects during manufacturing.
5.2.5 Recommendations
5.2.5.1 Policy Enforcement Arrangements
All drones, regardless of whether they are used privately or commercially, should be registered under
a national agency or department (e.g. FAA of the United States) before they can be used (Stoddard,
2015). In fact, a registration number should be provided for each drone in use by the authoritative
agency to implement the efficient supervision and regulation of safe drone operations. Specifically, it
is recommended that drones operators submit applications to the relevant department of their nation
according to their proposed operations. For example, a drone whose objective is to monitor disasters,
natural resources or climate change in the US may be obliged to inform the NOAA, within the U.S.
Department of Commerce. Registrations of all drones in use will facilitate the identification and
management of the drone, its operator, and the transparency of use.
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In addition to registration, all commercial and private drone pilots should undergo a mandatory pre-
flight training program that is approved by national authorities. This program will certify drone
operator pilots in web-based ground training, computer-based drone simulator training, and hands-
on flight training. A drone pilot certification will acknowledge the pilot’s approved acquisition of drone
operational and safety skills, ensuring the rightful and safe uses of drones. Regulations on the
international cross-training of drone pilots should be developed as well, to promote the harmonization
of international drone guidelines. This certification should then be used as supporting documentation
towards applying for liability insurance in the case of an accident.
5.2.5.2 Drone Operations and Accident Prevention
Certified operators of registered drones must abide to rules of flight. All drones must be operated
during daytime with visual conditions that allow optimal control. Privately used drones must be
operated with VLOS, and are prohibited from flying over unprotected individuals or moving vehicles,
to avoid injury and property damage (Stoddard, 2015). Although this recommendation has
implications for commercial uses of drones with respect to limiting the technological and market
capabilities, future legislations should be able to adapt to the growing technology towards drones
operable without VLOS.
Drones can become a large safety and security hazard to individuals and to the environment in many
areas. International regulations should thus be in place to ensure that drones would stay a proper
distance away from sensitive locations such as airports, prisons, hospitals, and military bases (McNeal,
2014). Such regulation should list out all the enforceable restricted areas, and the consequences
involved if violated. Nations should make an effort to unify a list of restricted areas so as to better
accommodate foreign drones. Exceptions to the restricted area regulations are provisioned and may
be granted by the national authority if warranted.
When it comes to the development of legislations with respect to maintenance, pilot training, and
operations, drones should be considered as important as manned aircraft.
5.2.5.3 Fixed Altitudes for Private and Commercial Drone Uses
In Europe, the maximum altitude for drone flight is 150 m above ground level in crowded areas, while
the maximum for the US is about 120 m (Atherton, 2016). Considering these differences, we
recommend a harmonized, global maximum altitude each for private and commercial drones.
Recreational drones should fly no higher than 120 m from ground level, or from the top of a structural
building. Meanwhile, commercial drones should not fly beyond 150 m from ground level or from the
top of a structural building.
If drones surpass the recommended maximum altitudes, then the flight conditions would no longer
be optimal. The likelihoods of radio signal interference and intrusion into devoted airspace for
airplanes would rise, which may lead to an increase in drone-associated accidents. On the other hand,
drones should not fly too low either, where they would be susceptible to collisions with objects in the
environment and people (McNeal, 2014). Laying out the proposed altitude levels for drones on a
global scale, revisions and fine-tuning of the numbers will undoubtedly take place over time until a
compromise between nations is reached.
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5.2.5.4 International Cooperation on Airspace
Around the world, 34 countries are involved in an international policy that aims to promote mutual
aerial observations between them, called the Treaty on Open Skies. Effective since 2002, the treaty
allows the State Party to aerially observe any other State Party’s territory without compromise to
either party’s national security (US Department of State, 2012). Adapting this policy to include drones
would permit drones to have the right and limited access to fly within the State Party’s territorial area,
providing increased operational flexibility for drone alliances. Although the Open Skies agreement
would allow drones to fly over and land in another Party’s territory, the drone must abide by the set
legislations of the nation in which it flies (Sochor, 1991). The adapted Treaty on Open Skies would
further promote international cooperation, communication and mutual assistance by the use of
drones.
5.2.5.5 Recommendations for Drone Use in Remote Sensing
Currently there is no specific legislation for remote sensing activities conducted by drones, however,
many aspects are already addressed in the current legal system. Considering the rapid development
of the technology and application of drones, a systemic and comprehensive legislation must be
established before long.
For the purpose of remote sensing, legislation must determine how accumulated data may be used,
and if data captured included people, private property or government property, whether consent
would be required. The establishment of these regulations will help accelerate various applications of
remote sensing, like land survey, agriculture and precision farming, power transmission line
monitoring, etc.
5.2.5.6 Guidelines for Drone Manufacturing
The International Organization for Standardization (ISO) develops international standards and
guidelines for various services, products, materials, and processes (International Organization for
Standardization, 2007). As there are currently no specific standards in place that apply to the
manufacturing of drones (particularly, drones capable of remote sensing), we propose the creation
and publication of ISO guidelines (or analogous) for drone manufacturers. Manufacturing companies
would then have the option of following those guidelines, enhancing the quality and safety of the use
of drones.
5.3 Ethical Considerations
5.3.1 Drone Failures
In the current era of rapid technological advancements, there are new prospects for drone usage in
remote sensing. However, like any other aerial vehicle, drones are subject to technological and piloting
errors that may cause physical harm to individuals and/or damage to property and objects when they
malfunction. Determining faults and liabilities in these cases are important for fair consequence
allocations and prevention measure developments. In contrast to the drone technology
advancements, properly defined drone legislations fall behind. The following discussion will focus only
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on the regulative considerations for commercial drone failures in the United States, as other countries
have similar or less defined regulations. In this section, three main federal authorities will be discussed
in the context of reporting a drone failure: the National Transportation Safety Board (NTSB), the FAA,
and the Aviation Safety Reporting System (ASRS).
5.3.1.1 National Transportation Safety Board
The NTSB is an independent federal agency that sets out to investigate transportation-related
accidents. The agency aims to determine the probable cause and provide safety recommendations for
future accident prevention. According to the Code of Federal Regulations, Title 49 (49 CFR) from the
US Departments of Transportation and Homeland Security (Office of the Federal Register, 2012), a
drone accident is defined as,
“An occurrence associated with the operation of any public or civil unmanned aircraft system that
takes place between the time that the system is activated with the purpose of flight and the time that
the system is deactivated at the conclusion of its mission, in which:
(1) Any person suffers death or serious injury, or
(2) The aircraft has a maximum gross takeoff weight of ≥ 300 lbs (136 kg) and sustains substantial
damage2”
Note: details on regulations are presented in Appendix B.
If such an accident occurs, the article specifies that the drone operator is required to immediately
notify the NTSB (through their 24-hour Response Operations Center (ROC) in order to file a report
(Office of the Federal Register, 2012). Other situations that may qualify for mandatory NTSB
notification are listed in Table 5-3. Depending on the situation at hand, an investigation may be
initiated, with a probable cause determination report outcome. It is important to further note that
the NTSB does not determine any faults or liabilities with respect to the drone accident, since their
primary objective is to investigate the cause and prevent similar accidents from occurring. They can,
however, judge appeals from enforcements brought on by the FAA against drone operators. The two
levels of appeal are the Administrative Law Judge level, and the complete board of NTSB members
(Rupprecht, 2017).
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Table 5-3: Drone failure situations that require immediate NTSB notification (includes public and foreign drones) (Office of the Federal Register, 2012)
Potential Drone Failure Situations
Malfunction or failure of the flight control system resulting in a drone “fly-away”
Inability of the remote pilot to perform normal flight duties (i.e. due to injury or illness) In-flight fires (i.e. caused by batteries)
Collisions with aircraft while in flight
Damage to objects other than the drone resulting in repairs greater than $ 25 000 USD (includes materials and labor)
Release of at least a portion of the propeller blade (unless caused by ground contact)
Overdue drone that is believed to be involved in an accident
5.3.1.2 Federal Aviation Administration
In some cases, reporting drone accidents to the FAA may also be required. The FAA is a national
authority that regulates all aspects of civil aviation to promote safety and efficiency. It is required to
report to the FAA under two scenarios: after the occurrence of an in-flight emergency or within 10
days of an accident (Rupprecht, 2017). In the case of emergency, the remote pilot of a drone may
deviate from any rule during an in-flight emergency that requires immediate action, only under the
condition that it gets reported (Office of the Federal Register , 2000). In the case of a reportable drone
accident, the FAA has a different set of definitions than the NTSB. The FAA refers to the 14 CFR § 107.9,
which defines a reportable drone accident as when either of the following events occur:
1. Serious injury to any person or any loss of consciousness
2. Property damage, other than to the drone, that exceeds $500 in repairs, replacement or in
fair market value
For investigations carried out by either the FAA or the NTSB to be effective, the drone operator
involved in a reportable accident must act to ensure the preservation of the wreckage site and objects
involved as best as possible. These items include the drone, payload, any recording device(s), and any
object of the involved impact environment. Movement or disturbance of such items are only
permitted when the purpose is to protect any individual or to protect the wreckage from increasing
damage. Photos, sketches, notes, or other means to record the original wreckage condition should be
made and retained until authorized.
Once a report has been made to the FAA (either electronically or by telephone through their ROC),
enforcement actions against the operator may ensue depending on the results of the investigation. In
many cases, reporting to both the NTSB and the FAA are recommended, to better help mitigate the
occurrences of future drone accidents.
5.3.1.3 Aviation Safety Reporting System
In addition to the mandatory reporting procedures to the NTSB and the FAA, a voluntary report to the
ASRS run by NASA is encouraged in the case of a drone incident, or any situation in which aviation
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safety may be negatively implicated. The primary objective of ASRS is to “collect, analyze, and respond
to voluntary […] incident reports in order to lessen the likelihood of aviation accidents” (Carmona,
2015).
The ASRS is in place to stimulate a positive, reconstructive attitude towards unsafe aviation incidents,
and towards the continuing pursuit to prevent them. In fact, the FAA offers a guarantee of report
nondisclosure during their enforcement actions against the reporter, to promote the confidentiality
of ASRS reporting. With no authority to issue penalties nor certificate suspension orders, the ASRS can
optimize the collection of data and information on aviation accidents, which are then used to inform
stakeholders (Connell, 2015).
5.3.1.4 Recommendations for a Harmonized Reporting System
For the United States, three reporting systems for drone failures are in place, all of which have the
same primary intent to prevent future accidents from occurring. Although contrasted by their
enforcement authority, the NTSB and the FAA should work together to create a consistent reporting
legislation. The harmonized legislation would lead to a consistent definition for a ‘drone accident’,
thereby also facilitating reporting procedures for operators of drone failures. Furthermore, the
synergistic potential from the ideal harmonized authorities would allow other countries, whose drone
reporting legislations may not fully be developed, to quickly follow suite. An example of this is
portrayed by Russia, whose recent active drone regulations resemble that of the United States
(Atherton, 2016). The impact of acting as a functional role model authority to other nations may guide
the employment of similar legislations, which may then facilitate a globally, harmonized legislation on
drones.
The voluntary ASRS by NASA deals with a broad range of cases where aviation safety, including those
that involve drones, is compromised. With no disincentives to report to the ASRS, in addition to the
positive attitude it promotes for reporting to benefit future scenarios, the stigma of drone usage
coming from drone violations and accidents can be alleviated. Drone accident cases reported to the
ASRS promotes the openness of how drones are used, which may relieve the fear of danger associated
with drones. An analogous system should be in place for all other drone legislations to mitigate other
associated social fears.
5.3.2 Safety Considerations
Drones are complex technological instruments designed to fly by remote control. As such, drones and
their operations present various safety concerns. These include collisions, loss of communications,
reliability of the design, and training and qualification skills of the drone pilot that could raise potential
risks to persons and property.
5.3.2.1 Collisions with Other Air Traffic
Pilots control drones remotely. This is a complicated task since the pilots need to be able to avoid
obstacles. The challenge is greater in avoiding objects that are beyond the line-of-sight of the
operator. Despite using GPS navigation to direct the drones, there have been destructive crashes
because of undetected objects in the drone’s path. Currently, the one of greatest concern in the
aviation industry is drones colliding with manned aircraft (Bachman, 2016).
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In the past, there have been several near misses with commercial aircraft as drones had wandered
into restricted airspace (Whitlock, 2015). Domestic airspace hosts approximately 70,000 flights per
day at various altitudes in the US (Elias, 2012). This high risk of collision between aircraft and drones
must be mitigated as soon as possible. Currently there is no effective technology available for drones
to avoid collision although this technology is under development. In manned aircraft, pilots provide
situational awareness in the event unexpected obstacles such as a bird flying in front of the aircraft.
Due to the nature of drones, this important input is missing in drone operations. To address this issue,
Iris Automation is attempting to develop a collision avoidance system that would prevent the drone
from impacting any moving object. However, even with advanced GPS software, it would be difficult
for drones to maneuver when there are unexpected objects, as there is no flexibility once the
coordinates are entered. Iris Automation aims to eliminate this disadvantage (Kolodny, 2017).
Small drones pose an added risk as they are too small to accommodate transponders and therefore
cannot receive and transmit signals. If they venture into restricted airspace, they could very well
collide with low altitude aircraft. Larger and more sophisticated drones seeking to venture beyond the
line of sight of the pilot require capabilities that would aid collision avoidance such as onboard
cameras, radars, etc.
5.3.2.2 Human Errors
One of the most important human factors to be considered is the minimum qualifications required to
fly drones. Currently, the qualification standards depend on the size and complexity of the drone. In
other words, only pilots who fly commercial drones are required to undertake the required training
and qualifications whereas persons who operate small or private drones are not required to undertake
any training of this sort – except in a few selected countries. Amateur drone pilots can pose a high risk
to their environment if they are unable to command the drone effectively.
Currently the US Air Force conducts specialized training for the pilots who command the
Predator/Reaper and Global Hawk drones. However, it is uncertain if and how the FAA would use
these techniques as a foundation to develop standardized training programs for all drone pilots
especially for small drones. Another issue to be considered is medical certification for individuals with
medical conditions such as poor eyesight.
5.3.2.3 Risk Mitigation to Persons and Property
Drones pose a risk not just to other air traffic, but also to persons and properties on the ground. The
likelihood of a small drone crashing may be high; however, the estimated damage is not that large due
to the small size of the drone and the amount of fuel that can be carried. On the other hand, larger
drones can cause severe damage.
An example of the ineptitude of amateur drone pilots is a drone crashing directly into persons in a
crowded area. In 2006, two female guests at a wedding sued the groom as a drone used to click
photographs spiraled out of control and hurtled into the guests during the reception. Luckily, there
were no major injuries or damages caused (Locket, 2016).
Risk mitigation strategies may include, for example, a risk assessment of the systems, development of
risk mitigation plans, and training and certification for the private drone pilots (Elias, 2012).
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5.3.2.4 Drone Insurance
The insurance markets for the manufacturing sector of drones have not matured yet. Drone
operations however, may cause considerable damages both to persons and property. In operating
drones, safety is a major concern and priority for legislators. Despite the rapid development of
technology, legislators must take time to formulate a legal frame work that will ensure the reduction
of the likelihood of injuries to the public or property (Vogel, 2016). The lack of standard insurance
policies for drones inhibits the use of drones in many countries.
In an effort to raise awareness to the increasing use of drones by the public in the USA, the Risk
Management Society (RIMS) held a conference in 2016 entitled "Managing Unique Risks Posed by
Unmanned Aircraft Systems." As a result, several key issues were outlined (Heft, 2016).
For insurance purposes in the USA, drone operations are defined according to the purpose of
operation as either recreational or operational. Insurance is then modulated per the type of use.
Commercial drone operators must be aware of the FAA rules for the integration of drones into the
national airspace. The FAA awards grants of exemption to companies looking to use drones as part of
their business. This is a way for businesses to get around requirements and conditions that were
established for manned aircraft. For exemption, Non-owned Aviation Liability insurance is required.
Insurance only applies when a specific pilot is in command.
For businesses, it may be very cheap to buy drones. However, licensing from the FAA is complicated.
In addition, many drone companies will not allow the drone to leave the factory before the operator
completes specific training. It may be simpler to contract drone services from specialized companies
who employ certified pilots. When hiring a drone vendor for commercial operations, contracts with a
drone vendor must include insurance requirements. Businesses that contract drones must also install
their own insurance in case the contract breaks down.
Aviation specific insurance products designed for drone operations include: (1) Physical damage (hull),
which includes the drone, cameras, sensors, ground station. (2) Liability, (3) Aviation Commercial
General Liability, (4) Aviation Products Liability and (5) Non-owned Aviation Liability. High limits are
available: Hull/physical damage up to $1 M and liability up to $300 M (Heft, 2016).
In China, for example, Ping An Insurance (one of the largest insurance companies) supplies its services
to pilots and drones, under ‘personal safety insurance for a remotely controlled toy’. This is the
beginning of insurance services for drone manufacturing companies in China (Chenyu, 2016).
For any business using drones, safety should be the number one priority. Companies have to follow
all regulatory drone guidance from the Occupational Safety and Health Administration. Federal and
state laws and regulations apply.
An electronic logbook (black box) can be installed on drones to monitor their position at all times, for
increased risk management. In addition, a standard operating procedure for drone activity is required
by the FAA.
The indoor use of drones is not governed by FAA jurisdiction. However, indoor flying means more
chance of collisions and damages.
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5.3.3 National Security
Aside from safety, private, commercial, or military drones operated in domestic airspace can raise
several potential security risks, including terrorist attacks utilizing drones to drop explosive devices
over civilians.
5.3.3.1 Borders
Some countries such as the US, utilize advanced drone technology to patrol the border. A 2010 report
from The Congressional Research Service examines the strengths and limitations of deploying drones
along the borders. The US Congress has supported the use of drones in border surveillance; however,
there are many practical issues that need addressing. Congress is worried about costs vs. benefits,
although drones are less expensive compared with manned aircraft, but the operations cost may be
more expensive (CRS, Congressional Research Service, 2010).
The US uses two kinds of drones for surveillance, one remotely piloted and another one programmed
for an autonomous fly. Both can carry a lethal payload onboard. Using drones for border control has
benefits but also limitations. Drones can help to cover sections of the border and cameras onboard
can identify an object from high altitude and provide real-time images. Information can be distributed
in a quick and effective manner. Also, drones have thermal detection sensors that can detect illegal
border entrant attempts during the night. Among limitations are the high accident rates reported.
Some are attributed to the fact that drone technologies are still evolving and to the lack of a pilot
onboard to make decisions according to inputs (wind speed, obstacles, etc.) (Haddal & Jeremiah,
2010).
The European Defense Agency has developed a program to integrate drones, which fly at medium
altitude with long endurance, into military forces. This program is backed by the EU member states’.
In this sense, drones become an important element to the EU plans for border control. The European
border agency, Frontex, and the European Border Surveillance System (EUROSUR) are working to
integrate drones with other systems such as radars, satellite imagery, sensors, etc. (Hayes & Jones,
2014).
China’s program to improve its military power, for the protection in case of regional conflicts was
started in the 1990’s and now includes drones. China uses drones for Intelligence, Surveillance, and
Reconnaissance (ISR), maritime surveillance, particularly in the East China Sea (ECS), South China Sea
(SCS), as well as in border surveillance." (Chase & Gunness, 2015).
Russia includes drones in surveillance, reconnaissance, border patrol and coastal surveillance. With
22,000 km of borders and 37,000 km of coastline, Russia benefits from using drones as a tool for
surveillance over the territory, monitoring, and tracking over the sea (ships in the Black Sea). In
addition, drones are used to surveille arctic areas and the Northern Sea (Facon, 2015).
5.3.3.2 Drones as Weapons
A major security risk is the weaponization of private and commercial drones for the purpose of
terrorist attacks carried out with chemical, biological or radioactive weapons. In 2011, Rezwan
Ferdaus, a US citizen, was arrested by the FBI and charged with conspiring to bomb the Pentagon and
the Capitol using a large drone packed with explosives. Although the payload capacity of the drone
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was small, Ferdaus admitted that he planned to recruit others to shoot down people fleeing the
Pentagon and the Capitol after the attack. This incident raised concerns about the potential attacks
terrorists can carry out using drones (Office of the Federal Register, 2012).
5.3.3.3 Hacking and Signal Jamming
Non-recreational or commercial drones weighing more than 8 kilograms should have a GPS Navigation
system that is spoof resistant, which would prevent average hackers with advanced software
technologies from penetrating through the firewall and orchestrating a hostile takeover. Hackers
often intercept and create false GPS signals that can trick the receiver into misinterpreting an incorrect
location and thus crashing into it. Hackers can also gain access to the launch and pilot codes and
potentially use this information to blackmail the Government or the owner. They could also sell this
information to the black market. Once this information is lost, there is no telling what these individuals
might do and the US Government or owner would still be responsible for the damages (Pitts, 2015).
5.3.3.4 Government Usage of Drones
The usage of drone technology by governments is currently limited (McNeal, 2014). The worry about
introducing drones to law enforcement and surveillance is that the people’s privacy will be threatened
extensively and invasively. The detractors argue that although the government may employ drones
for extensive surveillance, this would be a huge encroachment on privacy while the advocates contend
that the ability to continually invigilate certain areas would help provide security and prevent crime.
Opinions gathered from the courts in the US point to the fact that the public does not have an accurate
expectation of what privacy entails (Matiteyahu, 2015) and so, the government ought to be allowed
to conduct aerial surveillance to monitor people outside of their homes using drones without
breaching the Fourth Amendment of the US Constitution.
5.3.4 Privacy
The US Congress introduced several bills and amendments to limit the operation of drones to protect
the privacy rights of citizens (United States Congress, 1994-2017). These bills attempt to address the
vagueness of the Fourth Amendment of the United States Constitution which protects US citizens from
unwarranted and unreasonable searches and seizures of property. However, to enjoy the rights to
privacy, according to Supreme Court Justice Harlan in the case of Katz v. United States (389 U.S. 347,
361, (1967), a person must exhibit the expectation of privacy, and this expectation must be
“reasonable” (U.S. Supreme Court, 1967).
In an era where a drone can conduct surveillance of an entire city, collected data can reveal intimate
details about a person’s life, which may make it difficult to define a “reasonable” expectation of
privacy. As time progresses and technology improves, people are more accepting of surrendering their
privacy. A noteworthy example is allowing Google to track a person’s location by GPS. Thus, the
expectation of privacy is being continually diluted. In a world where access to private information is
at a click of a button, “reasonable” expectation must be defined so that a person should not have to
surrender his/her privacy (Levush, 2015).
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In public places, such as parks and streets, there is no “expectation” of privacy and therefore, a person
cannot claim invasion of privacy. The same argument may apply to personal property visible from
public places such as the front garden of a house being visible from a public pavement.
Filming the interior of a private building is illegal but that argument could be extended to make it
illegal, also, to film the exterior of a property not visible from a public space. This means that for a
drone operator filming someone’s private back garden would be considered an invasion of privacy
(McDougal, 2016).
In a town in Colorado, USA, it is legal to shoot down a drone flying over private property (Cullers,
2016). In Texas, legislators made using a drone to film people or property - without consent –
punishable with a fine of up to $500. Improper usage and malicious distribution of the collected data
would carry civil penalties of $10,000. However, using drones to track environmental hazards or
uncover criminal activity would be an exception to the law (Associated Press, 2013). These two
examples present legislators’ attempts at formulating legal instruments to deal with the broadening
of drone applications affected by technological advancements.
5.4 Recommendations for New Policy Development
As previously mentioned, the two main concerns about using drones for remote sensing remain
security and privacy. Following the example of the licensing of weapons to the public, whereby some
weapons can be legally possessed by individuals, and some are restricted to military use only (Masters,
2016), we propose to create a division between private and public use of drones, as shown in Figure
5-1.
Figure 5-1. Proposed categories of drone use.
In the Public sector – drones will be owned by state authorities, such as fire fighters, medical services,
municipal authorities and central governments. In this sector, drones will be licensed to fly and to
perform remote sensing activities at high resolutions. The authorities will integrate drones into their
services and provide remote sensing data for disaster management, urban planning, traffic control,
etc. The authorities will control access to data, complying with privacy restrictions. Services like
remote sensing for agricultural use will also be provided by the authorities and the data released will
be monitored for security and privacy. Restricting this advanced drone technology to governmental
use will also solve liability issues, as the state will be liable for any damage caused by state-operated
drones.
Recreational
Public
Private
Commercial
Public
Private
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In the private sector, drones will be subject to regulation, and some types of drones will not be
permitted for private use. To facilitate the regulation of drones, we propose to classify drones by three
features: weight, control distance, and type of remote sensing equipment (mainly spatial resolution)
used as a payload.
The state will provide courses on drone operation which will include the laws on privacy and security
issues. Only certified drone operators will be allowed to purchase drones.
Such a division between private and public use of drones should also provide a solution for liability
issues. Any drone larger than 0.5 kg (which are covered by personal insurance), will have to be insured
and licensed. This is similar to the situation in the USA, where in 2015, the FAA required all owners of
small drones that weigh 0.5 -55 pounds (0.23 - 25 kg) to register online, before flying the drones. By
linking registration to licensing and insurance, such regulations can efficiently control issues of
security, and conformity with laws of privacy and liability.
For the international regulation of the use of drones, ICAO is working to understand, define, and
ultimately integrate drones. The ultimate goal of ICAO is “to provide the fundamental international
regulatory framework through SARPs for drone activities” (ICAO, 2011). The first recommendations
for standards are expected to be published in 2018 (Carey, 2015). These are expected to greatly
facilitate the use of drones in international border areas. The integration of drone regulations into civil
aviation rules will also provide a legal framework for drone use on the national level, in particular in
countries which have not yet designed clear rules for operating drones.
5.5 Impact of Technological Growth on Law and Society
The cost for drone technology is decreasing, while the accessibility of it is increasing, making drone
use common in various disciplines. The rapid advancements of drone technology are driving
applications such as remote sensing, faster than the legislation. In fact, many of the legislations under
development vary from region to region, depicting the disorganization by policy makers who are
approaching the subject. In the United States, forty-three out of the fifty states had made some
considerations for drone legislations by 2013, however only nine states had some drone laws enacted
upon (Upchurch, 2015). It is important to note that updates to legislations to address drones are an
ongoing challenge for policy makers.
The lack of a unified legal framework to deal with drone operations raises public concerns over the
transparency of drone usages with respect to human rights, safety, privacy, surveillance, signal
interceptions and more. Although the FAA has a large authority over air traffic, liability measures
resulting from technological drone issues remain unclear.
Legal concepts need to be tailored to drone applications (Solomon, 2014). Current legislations in most
countries do not allow the full exploitation of remote sensing capabilities of drones. In the US, for
example, the weight and altitude limits are too constrained, in addition to the restriction of flying over
individuals not involved in the drone project (O'Dorisio, 2016). Therefore, to fully enable the remote
sensing drone market, laws that allow for technological advancements while maintaining public
safety, privacy and security are required.
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This situation is not unique to drones. In fast advancing technologies, the law is usually lagging, since
legislators prefer not to regulate prospectively. Legislators rather wait until problems in operating new
technologies are raised, and then proceed to put forth regulations (Miller, 2015). Though this is the
current state of drone legislations, policy makers need to be ready to deal with the dangerous
capacities of remote sensing drones. A balance between the utility of this application and the
restrictions imposed to prevent dangerous scenarios needs to be established within the law.
Proper initial legislations can be made by developing legislations analogous to the airplane
manufacturing regulations. For example, commercial airplane manufacturers have a contract with
airliners that guarantees the safety of the aircraft if certain conditions are met. Similarly, legislations
that outline the requirement for drone manufacturers, may set the stage for some laws on liabilities.
The advancing drone technology raises issues of design and usage. How these technologies fit into
human society will be directed by the current and future legislations developed for drones.
5.6 Summary of Recommendations
Table 5-4 below presents a summary of general recommendations proposed for drone legislation.
Implementing these recommendations on both national and international scales will be an
important step forward in the integration of drones into our daily life in a safe, secure and legal
fashion.
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Table 5-4: Summary of Legislative Recommendations for Drones
Policy Enforcement
Compulsory registration for all drones (regardless of purpose: private/commercial) under a national agency / department, where registration numbers are recorded and distributed.
The registration of drones under the relevant department according to its operational purpose
Compulsory approved pre-flight training for pilots/operators, which may be used towards obtaining liability insurance
Development of regulations for drone pilot cross-training across nations
Accident Prevention
Daytime flights of drones only, within the VLOS of the pilot/operator for private uses; future legislations should tailor towards removing the VLOS restriction for commercial use of drones
No drone flights over unprotected individuals and moving vehicles
Development of limitations for flight distances from sensitive locations (i.e. airports, prisons, military bases, hospitals)
Synchronisation of the lists of restricted areas from various countries
Fixed Altitudes
Recreational: no flights >120 m from ground level, or from the top of a structure
Commercial: no flights >150 m from ground level, or from the top of a structure
International Airspace
Cooperation Adaptation of the Treaty on Open Skies to include drone policies
RS Drones Development of legislations and regulations for the drone remote sensing activities and data
Drone Manufacturing
Publication of ISO (or analogous) guidelines for drone manufacturers to follow
Accident Report System
The development of a harmonized and consistent drone accident reporting system on a national level
Policy Development
Clear division between the private and public uses of drones to establish two groups of regulations in terms of ownership, operational licenses and authoritative control of data
5.7 Conclusion
Drone operations in general, and remote sensing applications in particular, pose a significant challenge
to legislative frameworks around the world. It is clear that a lack of a unified legal framework hinders
the integration of drone technologies with those of general aviation activities.
5 – Legal Frameworks for Drone Operations
Conclusion
ISU Page 111 | 128 MSS 2017
The chapter presented an overview of current national laws in several countries with a high potential
for drone applications. Legislation around the world varies greatly in scope and in level of regulation.
There are, however, no international regulations for drone operations. The need to integrate drones
into the international aviation system was recognized long ago, but the process is not yet complete,
and drones remain unregulated at international level. Nevertheless, improvements in technology pave
the way for advances in applications, legislation is undergoing change to incorporate the new
developments in a ‘catch up’ scenario.
Following the review of existing laws in ten countries, gaps in legislation were identified and
recommendations for a unified legal framework are made. Recommendations include unification of
drone laws, standardization of drone categories, and obligation for registration and strict
manufacturing control.
Implementing the above actions would address major issues concerning safety, security, privacy and
public liability. Effective regulation would enable industry to exploit commercial opportunities to the
full and the public enjoy the benefits of advanced drone technologies in full.
Conclusions
ISU Page 112 | 128 MSS 2017
6 Conclusions
The capacity and capability of advanced drone technologies in terrestrial remote sensing are reviewed.
An assessment of drones is conducted as a complement and as a substitute to satellites. The review
process considered the direction that future drone technologies might follow indicating their potential
for deployment in planetary exploration missions.
Drones are versatile and technologically advanced machines. As such they are capable of performing
remote sensing activities in many fields and applications. For the purposes of this report though the
scope is limited to operations in disaster management, resource management and climate science.
Drones are found to have established themselves as capable technologies warranting investment by
the business community for market growth and extension. Technical advances in such areas as energy
management, power source, autonomy, materials and design, sensors and propulsion would
determine the size of the future drone market on Earth and, in decades from now, in space.
The routine use of drones in resource management, for example, in precision agriculture, forestry,
and mining would improve crop yields, help protect forests against fire and disease and mitigate
against industrial accidents leading to loss of life and economic capacity. In disaster management, the
combined use of drones and satellites to provide flood management and forest fire monitoring would
improve search and rescue missions to save lives and to reduce property and asset damage. In climate
studies, drones and satellites, together, can assess global warming effects in polar regions while
maintaining a watchful eye on drought damage, sea level rise, and weather and cloud formation in
other parts of the Earth.
The operation of drones, however, would also pose serious risks to security, potential injury to people,
property damage and invasion of privacy. To have a successful drone market, much like civil aviation,
drone operations would have to be firmly regulated by a legal framework to cover liability and
accountability, and to protect the public and their property against drone misuse. The review,
nevertheless, established that not all countries regulated drones to the same extent and that an
international regulatory framework binding all national laws was missing. Legal regulation was found
to have fallen behind technology thus potentially preventing the market to expand and exploit its full
potential.
Drone technology offers advantages in remote sensing that makes them an ideal platform for use in a
range of niche applications. Drones are found to work well in conjunction with remote sensing
satellites but in some cases, they could be a direct replacement for space-based solutions. The use of
drone-based remote sensing to conduct missions in climate studies, resource management and
disaster management is the subject of research by Dragonfly.
In climate studies, satellites remain as indispensable tools for providing extensive global coverage.
Accurate terrestrial weather forecasting and large-scale climate studies would be impractical without
space-based solutions. Drones, however, also offer advantages. They are able to deploy fast and
provide precise data at high spatial and temporal resolutions. Compared to other aerial systems,
drones operate in severe weather conditions more ably. This feature allows drone to be deployed as
in-situ information platforms in areas struck by severe storms and hurricanes without risk to pilot and
crew life. Drones are, consequently, seen as a candidate for integration into the Global Earth
Conclusions
ISU Page 113 | 128 MSS 2017
Observation System (GEOS) and for use in cooperation with satellites to carry out specialized climate
and weather formation studies. Drones are a unique platform for providing new information to GEOS.
Drones should, therefore, be integrated into GEOS and into private weather monitoring services.
Conventional remote sensing offers lower resolution than drone-based systems and a top-down view
that could limit in-depth analyses of objects and terrains. Drones can carry only limited payloads,
restricting their mission applications, but their mobility and low altitude flight allows for the collection
of images from more advantageous perspectives. This potentially enables scientists and researchers
to carry out more complex studies on the collected data.
In disaster management, fast deployment makes drones an ideal remote sensing tool for providing
information to rescue teams. They are able to provide high-quality imagery over targeted locations to
give direct information to Search and Rescue (S&R) personnel on the ground. While satellite imagery
is useful, particularly in tracking widespread destruction, drones are poised to replace satellites in
localized disaster management scenarios. Drones as part of GEOS should be deployed more often in
disaster management as they offer, in some situations, superior capabilities to those offered by
satellites.
Advances in drone propulsion methods and batteries will allow larger payloads, making drones a
suitable option for more complex remote sensing missions. Better battery technology and improved
energy efficiency and management will increase flight duration too. Along with energy management
systems, improved software algorithms and communication methods will enable drones to undertake
more complex missions. New materials and manufacturing methods will lead to drones costing less
and being easier to produce. They will also raise drone performance to satisfy orbital and deep space
exploration missions.
Markets for the use of drones in remote sensing were analyzed. In policy terms, drones make remote
sensing missions more affordable than satellites, allowing developing countries to develop their own
independent access to acquiring data locally.
Low cost means drones are poised to become a form of disruptive technology in commercial remote
sensing. A closer examination of the commercial drone market shows that drone manufacturing is
dominated by well-established players. The service market has shown impressive growth in sales and
number of entrants, with healthy demand for new applications.
In resource management, drones stand out in Precision Agriculture. High-resolution thermal imagery
produced by drones helps to reduce usage of fertilizers, water, and pesticides, making farming more
efficient, lowering the impact of chemicals on the environment and improving the ecological footprint.
The ability of drones to take images from a variety of angles around a target makes them efficient at
3D mapping and volume estimates. This is particularly beneficial to such industries as mining and
construction where inventory management is a key consideration in operations. The said advantages
open up new prospects for big data solutions, potentially threatening the position satellite have
achieved over time.
In climate studies, drones can acquire precision information quickly and are able to operate in
dangerous or inhospitable locations such as studying volcano plumes or surveying ice sheets for glacier
research work. Putting monetary value to research is not straightforward but the value of increased
knowledge particularly of global consequences is significant. For that reason, there is a definite case
Conclusions
ISU Page 114 | 128 MSS 2017
to integrate drones into the GEOS system. A closer look at weather forecasting highlights the
usefulness of drones. Improvements to the accuracy and availability of local weather patterns is
estimated to bring about savings of €340 M annually, in Europe alone, in lower road traffic accident
claims. The financial payback for the extra cost of integrating drones into GEOS would be sourced from
savings resulting from better management and a reduction in accidents in bad weather conditions.
In disaster management, drones are a perfect solution to some of the existing S&R problems. As the
first six to twelve hours are considered the most critical in disaster management, the ability of drones
to provide rapid remote sensing data and communicate them to ground personnel would help reduce
S&R operating costs by refining mission targeting. This would also have a favorable impact on the
number of lives saved at a more affordable price than space-based solutions.
Drones are also of particular interest to insurance companies to accurately process claims and
damages. While rapid deployment is an advantage here, high-resolution images make for more
convincing arguments in discussions on liability. Drones could be used to obtain images of damaged
assets for loss adjustment and to provide means of estimating cost of repairs to damaged buildings
and infrastructure. Insurance companies could collectively establish a self-funding service company to
provide images and data services to the consortium funding it. Alternatively, a private drone service
company could provide data services.
Given their considerable potential benefits in disaster management, it suggested that public, private
and non-profit organizations develop drone programs for rapid deployment.
A review of national and international legal frameworks governing private and commercial drone use
exposed the absence of a unified legal framework believed to hinder the integration of drones into
existing remote sensing systems. While the need to integrate drones into the international civil
aviation system has been recognized, there is no international regulation harmonizing the operation
of drones worldwide. Instead, there is a plethora of national frameworks which vary in scope and
degree of regulation.
To help with the harmonization of drone legislation globally an international standard for drone
regulation is proposed. This would be adopted and run by ICAO to include the standardization of drone
categories, the obligation of individuals and corporations to register their drones, and the provision
of guidelines to drone manufacturers for drone safety and liability.
ISU Page 115 | 128 MSS 2017
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Appendix A – Remote Sensing Areas of Interest
Table A-6-1. Range of Applications for Drones
Glo
bal w
armin
g
surveillan
ce
Early warn
ing
Gravity field
measu
remen
t
Po
llutio
n su
rvey
Ice sheet
Meteo
rolo
gy
Ocean
ograp
hy
Clim
ate Stu
dies
Co
nstru
ction
man
agemen
t
Geo
logy
3D
map
pin
g
Po
llutio
n
survey
Map
pin
g
Urb
an
Plan
nin
g
Co
nstru
ction
Geo
logy
Main
ten
ance
Insp
ection
Energy
Min
ing
Forestry
Precisio
n
Agricu
lture
Re
sou
rce
Man
ageme
nt
Soil m
app
ing
Geo
logy
Arch
aeolo
gy
Forestry
Land
M
anage
me
nt
Search an
d R
escue
Early warn
ing
Cro
wd
con
trol
Disaste
r M
anage
me
nt
Search an
d R
escue
Cro
wd
con
trol
Reco
nn
aissance
Security
Surveillan
ce
Bo
rder p
rotectio
n
Ho
me
land
secu
rity
Tou
rism
Cro
wd
con
trol
Ph
oto
graph
y
Estates
Leisu
re
Ship
pin
g
Civil aviatio
n
Traffic
Transp
ort
Man
ageme
nt
ISU Page 128 | 128 MSS 2017
Appendix B – Legal Definitions
1- 49 CFR § 830.2 defines a serious injury as any injury that (1) Requires hospitalization for more
than 48 hours, commencing within 7 days from the date of the injury was received; (2) results
in a fracture of any bone (except simple fractures of fingers, toes, or nose); (3) causes severe
hemorrhages, nerve, muscle, or tendon damage; (4) involves any internal organ; or (5)
involves second- or third-degree burns, or any burns affecting more than 5 percent of the
body surface.
2- 49 CFR §830.2 defines a substantial damage as a damage or failure which adversely affects
the structural strength, performance, or flight characteristics of the drone, and which would
normally require major repair or replacement of the affected component.
3- A serious injury is an injury that qualifies as Level 3 or higher on the Abbreviated Injury Scale
(AIS) of the Association for the Advancement of Automotive Medicine (AAAM). Within the AIS
system, injuries are ranked on a scale of 1 to 6, with Level 1 being a minor injury, Level 2 is
moderate, Level 3 is serious, Level 4 is severe, Level 5 is critical, and Level 6 is a nonsurvivable
injury. A Level 3 injury is when a person requires hospitalization, but the injury is fully
reversible (including, but not limited to, head trauma, broken bone(s), or laceration(s) to the
skin that requires suturing) (Duncan, 2016).
4- No civil penalty nor suspensions can be imposed by the ASRA as long as the aviation violation
was not deliberate, did not involve criminal activity, and the individual of interest was not
involved in any prior FAA enforcement actions within the last five years.(Allen, 2011)
The MSS Team Project work was conducted at the ISU Strasbourg Central Campus in
Illkirch-Graffenstaden, France
International Space University
MSS2017
© International Space University. All Rights Reserved.